486 lines
22 KiB
Markdown
486 lines
22 KiB
Markdown
E-MailRelay Change Log
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======================
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2.4 -> 2.5
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----------
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* Multiple configurations in one process.
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* [SMTP][] PIPELINING ([RFC-2920][]).
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* SMTP CHUNKING/8BITMIME 'BDAT' extension ([RFC-3030][]), disabled by default.
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* SMTP SMTPUTF8 extension ([RFC-6531][]), disabled by default.
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* No 7-bit/8-bit check on received message content (see NEWS file).
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* New built-in filters: `deliver:`, `split:`, `copy:`, `mx:`, `msgid:`.
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* New built-in address verifier: `account:`
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* No `.local` files (see NEWS file).
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* [PAM][] authentication is now enabled with `--server-auth=pam:` not `/pam`.
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* Client authentication details can be given directly from the command-line.
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* Multiple `client` authentication secrets, selected by a new envelope field.
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* Main binary can act as a simple submission tool (`configure --enable-submission`).
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2.3 -> 2.4
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----------
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* Multiple `--filter` and `--client-filter` options allowed.
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* [TLS][] key and certificate files can be specified separately.
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* Finer control when using `--anonymous` (eg. `--anonymous=server`).
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* The `auth-config` options can distinguish between TLS and non-TLS authentication.
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* Hourly log file rotation using `%h` (eg. `--log-file=log.%d.%h`).
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* Listening file descriptors can be inherited from the parent process (see `--interface`).
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* Listening ports on Windows use exclusive binding.
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* The Linux event loop uses `epoll` by default rather than `select`.
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* Some support for message routing (see NEWS).
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* Fix of error handling in network client filters (`--client-filter=net:...`) [bug-id #50].
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2.2 -> 2.3
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----------
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* Unix domain sockets supported (eg. `--interface=/tmp/smtp.s`).
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* Windows event log not used for verbose logging (prefer `--log-file`).
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* New admin `forward` command to trigger forwarding without waiting.
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* Optional base64 encoding of passwords in secrets files (`plain:b`).
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* Support for MbedTLS version 3.
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2.1 -> 2.2
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----------
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* Connections from IPv4 'private use' addresses are allowed by default (see `--remote-clients`).
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* Interface names can be used with `--interface` (eg. `--interface=eth0`).
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* New `--server-tls-connection` option for server-side implicit TLS.
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* New `--forward-to-some` option to permit some message recipients to be rejected.
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* New `--log-address` option to aid adaptive firewalling.
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* Dynamic log file rolling when using `--log-file=%d`.
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* Choice of syslog 'facility' on Linux with `--syslog=local0` etc.
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* Pipelined SMTP QUIT commands sent by broken clients are tolerated.
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* Better handling of overly-verbose or unkillable `--filter` scripts.
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* Optional epoll event loop on Linux (`configure --enable-epoll`).
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* Some internationalisation support (see NEWS file).
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* Support for Windows XP restored when built with mingw-w64.
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* C++ 2011 compiler is required.
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2.0.1 -> 2.1
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------------
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* Backwards compatibility features for 1.9-to-2.0 transition removed.
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* Better handling of too-many-connections on Windows.
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* New `--idle-timeout` option for server-side connections.
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* Support for [RFC-5782][] [DNSBL][] blocking (`--dnsbl`).
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* Filter scripts are given the path of the envelope file in argv2.
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* Message files can be edited by `--client-filter` scripts.
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* Better support for CRAM-SHAx authentication.
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* New `--client-auth-config` and `--server-auth-config` options.
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* New `--show` option on windows to better control the user interface style.
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* The `--pop` option always requires `--pop-auth`.
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* No message is spooled if all its envelope recipients are local-mailboxes.
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* TLS cipher name added to `Received` line as per [RFC-8314][] 4.3.
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* Certificate contents are not logged.
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* Timestamp parts of spool filenames no longer limited to six digits.
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2.0 -> 2.0.1
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------------
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* Make PLAIN client authentication work against servers with broken 334 responses.
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1.9.2 -> 2.0
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------------
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* Improved IPv6 support, with IPv4 and IPv6 used independently at run-time (see `--interface`).
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* Server process is not blocked during `--filter` or `--address-verifier` execution, if multi-threaded.
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* Support for the `mbedTLS` TLS library as an alternative to OpenSSL (`configure --with-mbedtls`).
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* TLS server certificates specified with new `--server-tls-certificate` option, not `--server-tls`.
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* TLS servers enable client certificate verification with `--server-tls-verify`, not `--tls-config`.
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* TLS clients can verify server certificates with `--client-tls-verify` and `--client-tls-verify-name`.
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* The `--tls-config` option works differently (see NEWS file).
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* New `--client-tls-server-name` option for server name identification (SNI).
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* New `--client-tls-required` option to force client connections to use TLS.
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* New `--server-tls-required` option to force remote SMTP clients to use STARTTLS.
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* New `--forward-on-disconnect` option replaces `--poll=0`.
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* The `--anonymous` option now suppresses the `Received` line, whatever the `--domain`.
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* The second field in the secrets file indicates the password encoding, not AUTH mechanism.
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* The `--verifier` option is now `--address-verifier`, with simplified command-line parameters.
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* Command-line file paths can use `@app` as a prefix to be relative to the executable directory.
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* Command-line file paths can be relative to the startup cwd even when daemonised.
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* Filter exit codes between 104 and 107 are interpreted differently (see NEWS file).
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* Message rejection reasons passed back to the submitting SMTP client are much less verbose.
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* Forwarding events are queued up if the forwarding client is still busy from last time.
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* The bind address for outgoing connections is no longer taken from first unqualified `--interface` address [bug-id #27].
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* The SMTP client protocol tries more than one authentication mechanism.
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* Some support for XOAUTH2 client-side authentication.
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* Client protocol sends QUIT with a socket shutdown().
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* The Windows commdlg list-view widget is used for the server status pages.
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* The Windows connection-lookup feature is withdrawn (`--peer-lookup`).
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* Several build-time configure options like `--disable-pop` are withdrawn.
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* C++ 2011 is preferred, and required for multi-threading.
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* Support for very old versions of Windows is dropped.
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1.9.1 -> 1.9.2
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--------------
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* Fixed a leak in the event-loop garbage collection.
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* A local hostname that fails to resolve is not an error.
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* A warning is emitted if there is more than one client authentication secret.
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* Multiple `--interface` options are allowed separately on the command-line.
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* Added a new `--client-interface` option.
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* The `Received` line is formatted as per [RFC-3848][] (`with ESMTPSA`).
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* The LOGIN and PLAIN mechanisms in the secrets file are now equivalent.
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* The Windows service wrapper can use a configuration file to locate the startup batch file.
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* Simplified the implementation of the GUI installation program.
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* Reworded the `read error: disconnected` log message.
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* Less verbose logging of `no more messages to send`.
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* Qt4 or Qt5 selected by the `configure` script.
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* Improved the RPM spec file.
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1.9 -> 1.9.1
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------------
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* Updated OpenSSL from 1.0.1e to 1.0.1g in the Windows build.
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1.8.2 -> 1.9
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------------
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* Added negotiated TLS/SSL for [POP][] (ie. `STLS`).
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* The first two fields in the secrets files are reordered (with backwards compatibility).
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* Added Linux PAM authentication (`configure --with-pam` and then `--server-auth=/pam`).
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* Optional protocol-specific `--interface` qualifiers, eg. `--interface smtp=127.0.0.1,pop=192.168.1.1`.
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* Outgoing client connection bound with the first `--interface` or `--interface client=...` address.
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* Support for SMTP-over-TLS on outgoing client connection (`--client-tls-connection`) (cf. `STARTTLS`)
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* Support for [SOCKS][] 4a on outgoing client connection, eg. `--forward-to example.com:25@127.0.0.1:9050`.
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* TLS configuration options (`--tls-config=...`) for SSLv2/3 fallback etc.
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* No `Received` line added if `--anonymous` and an empty `--domain` name.
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* Error text for `all recipients rejected` is now more accurately `one or more recipients rejected`.
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* New behaviour for `--client-filter` exit values of 100 and over.
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* New commands on the admin interface, `failures` and `unfail-all`.
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* Shorter descriptions in the usage help unless `--verbose`.
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* New default spool directory location on windows, now under `system32`.
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* Windows project files for MSVC 2012 included.
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* Removed support for Windows NT and Windows 9x.
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* Better support for Windows Vista and Windows 7.
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* Removed Windows `--icon` option.
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* Removed `--enable-fhs` option for `configure` (see INSTALL document for equivalent usage).
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* Added `--log-file` option to redirect stderr.
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* Added Windows `--peer-lookup` option.
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* Fix for MD5 code in 64-bit builds.
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1.8.1 -> 1.8.2
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--------------
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* Fix namespaces for gcc 3.4.
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1.8 -> 1.8.1
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------------
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* Changed the definition of `--as-proxy` to use `--poll 0` rather than `--immediate` [bug-id 1961652].
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* Fixed stalling bug when using server-side TLS/SSL (`--server-tls`) [bug-id 1961655].
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* Improved Debian packaging for Linux (`make deb`).
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1.7 -> 1.8
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----------
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* Speed optimisations (as identified by KCachegrind/valgrind in KDevelop).
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* Build-time size optimisations (eg. `./configure --disable-exec --enable-small-exceptions ...`).
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* Build-time options to reduce runtime library dependencies (eg. `./configure --disable-dns --disable-identity`).
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* New switch to limit the size of submitted messages (`--size`).
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* New semantics for `--poll 0`, providing a good alternative to `--immediate` when proxying.
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* SMTP client protocol emits a RSET after a rejected recipient as a workround for broken server protocols.
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* SMTP client protocol continues if the server advertises AUTH but the client has no authentication secrets.
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* When a message cannot be forwarded the offending SMTP protocol response number, if any, is put in the envelope file.
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* A warning is printed if logging is requested but both stderr and syslog are disabled.
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* A cross-compiling toolchain builder script added for running on mips-based routers (`extra/mips`).
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* New example scripts for SMTP multicasting and editing envelope files.
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* Improved native support for Mac OS X (10.5) with graphical installation from disk image.
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* Compatibility with gcc 2.95 restored.
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1.6 -> 1.7
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* TLS/SSL support for SMTP using OpenSSL (`./configure --with-openssl` with `--client-tls` and `--server-tls`).
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* Authentication mechanism `PLAIN` added.
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* Some tightening up of the SMTP server protocol.
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* Windows service wrapper has an `--uninstall` option.
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* Windows installation GUI uninstalls the service before reinstalling it.
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1.5 -> 1.6
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----------
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* GPLv3 licence (see `http://gplv3.fsf.org`).
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* New `--prompt-timeout` switch for the timeout when waiting for the initial 220 prompt from the SMTP server.
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* Fix for flow-control assertion error when the POP server sends a very long list of spooled messages.
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* Wildcard matching for trusted IP addresses in the authentication secrets file can now use CIDR notation.
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* More fine-grained switching of effective user-id to read files and directories when running as root.
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* Fewer new client connections when proxying.
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* The server drops the connection if a remote SMTP client causes too many protocol errors.
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* More complete implementation of `--hidden` on Windows.
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* Scanner switch (`--scanner`) replaced by a more general `--filter` and `--client-filter` switch syntax.
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* Support for address verification (`--verifier`) over the network.
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* Better support for running as a Windows service (`emailrelay-service --install`).
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* Utility filter program `emailrelay-filter-copy` exits with 100 if it deletes the envelope file.
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* Windows `cscript.exe` wrapper is added automatically to non-bat/exe `--filter` command-lines.
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* Installation GUI makes backups of the files it edits and preserves authentication secrets.
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* Installation GUI can install `init.d` links.
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* Experimental SpamAssassin spamc/spamd protocol support.
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* Acceptance tests added to the distribution.
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1.4 -> 1.5
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----------
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* New installation and configuration GUI using TrollTech Qt 4.x (`./configure --enable-gui`)
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* Default address verifier accepts all addresses as valid and never treats them as local mailboxes.
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* Fix for server exit bug when failing to send data down a newly accepted connection.
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* Spooled content files can be left in the parent directory to save diskspace when using `--pop-by-name`.
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* Client protocol improved for the case where there are no valid recipients.
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* New `--syslog` switch to override `--no-syslog`.
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* New `--filter-timeout` switch added.
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* Support for `--foo=bar` switch syntax (ie. with `=`).
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* Multiple listening interfaces allowed with a comma-separated `--interface` list.
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* New `--filter` utility called `emailrelay-filter-copy` to support `--pop-by-name`.
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* Documentation also created in docbook format (requires xmlto).
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* Windows installation document revised.
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1.3.3 -> 1.4
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------------
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* POP3 server (enable with `--pop`, disable at build-time with `./configure --disable-pop`).
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* Fix for logging reentrancy bug (affects `./configure --enable-debug` with `--debug`).
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* Fix to ensure sockets are always non-blocking (affects `--scanner`).
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* Allow `--verifier` scripts to reject addresses with a temporary `4xx` error code.
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* Automatic re-reading of secrets files.
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* Write to the Windows event log even if no write access to the registry.
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* Modification of set-group-id policy if not started as root.
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* Better checking of spool directory access on startup.
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* New `emailrelay-submit.sh` example script for submitting messages for `--pop-by-name`.
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* The `--dont-listen` switch is now `--no-smtp`.
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* Better IPv6 support (Linux only).
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1.3.2 -> 1.3.3
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--------------
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* No bind() for outgoing connections [bug-id 1051689].
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* Updated rpm spec file [bug-id 1224850].
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* Fix for gcc3.4 compilation error in `md5.cpp`.
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* Fix for glob()/size_t compilation warning.
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* Documentation of `auth` switches corrected.
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* State-machine template type declaration modernised, possibly breaking older compilers.
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1.3.1 -> 1.3.2
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--------------
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* Fix for core dump when `--client-filter` pre-processing fails.
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* Revised code structure to prepare for asynchronous pre-processing.
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* Better diagnostics when pre-processor exec() fails.
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* Better cleanup of empty and orphaned files.
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1.3 -> 1.3.1
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------------
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* Windows resource leak from CreateProcess() fixed.
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* Windows dialog box double-close fix.
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* Some documentation for the `--scanner` switch.
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* New usage patterns section in the user guide.
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1.2 -> 1.3
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----------
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* Client protocol waits for a greeting from the server on startup [bug-id 842156].
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* Fix for incorrect backslash normalisation on `--verifier` command-lines containing spaces [bug-id 890646].
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* Verifier programs can now summarily abort a connection using an exit value of 100.
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* New `--anonymous` switch that reduces information leakage to the SMTP client and disables `VRFY`.
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* Better validation of `MAIL-FROM` and `RCPT-TO` formatting.
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* Rewrite of low-level MD5 code.
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* Performance tuning.
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* Template `emailrelay.conf` gets installed in `/etc`.
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* New switches for the `configure` script.
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* More JavaScript example scripts.
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1.1.2 -> 1.2
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------------
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* The `--filter` and `--verifier` arguments interpreted as command-lines; spaces in executable paths now need escaping.
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* The `--interface` switch applies to outgoing connections too.
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* New `--client-filter` switch to do synchronous message processing before sending.
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* Keeps authentication after a `rset` command.
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* Fix for dangling reference bug, seen after `quit` command on Windows.
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* JavaScript examples in the documentation.
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1.1.1 -> 1.1.2
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--------------
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* Earlier check for un-bindable ports on startup, and later fork()ing [bug-id 776972].
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* Resolved the file-descriptor kludge for `--verifier` on Windows.
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* Less strict about failing eight bit messages sent to servers with no `8BITMIME` extension.
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* Supplementary group memberships revoked at startup if root or suid.
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* Pre-processor (`--filter`) program's standard output searched for a failure reason string.
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* Undocumented `--scanner` switch added for asynchronous processing by a separate network server.
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1.1.0 -> 1.1.1
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--------------
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* Restored the fix for building with gcc2.96.
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* Support for MinGW builds on Windows.
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* More reasonable size of the `--help --verbose` message box on Windows.
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* Windows `--icon` switch changed from `-i` to `-c` to avoid conflicting with `--interface`.
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* Shows `next server address` correctly in the configuration report when using `--forward-to`.
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* Fix for `make install` when `man2html` is not available.
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* Updated init script.
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1.0.2 -> 1.1.0
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--------------
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* In proxy mode unexpected client-side disconnects and timeouts do not leave `.bad` files [see also bug-id 659039].
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* By default proxy mode does not interpret addresses for local delivery (`--postmaster`).
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* Polling option added (`--poll`) to rescan the spool directory periodically.
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* New special exit code (103) for the pre-processor to trigger immediate polling; 100 to 107 now reserved.
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* Orphaned zero-length content files are deleted properly if the server-side dialogue is cut short.
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* The `--interface` switch applies to the `--admin` interface too.
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* Improved internal event architecture using slot/signal design pattern, and fewer singleton classes.
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* Event notification available through the administration interface.
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* New `--hidden` switch for Windows.
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* Syslog output includes process-id.
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* Support for Sun WorkShop 5.0 added.
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* Documentation overhaul.
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1.0.0 -> 1.0.2
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--------------
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* Support for trusted IP addresses, allowing certain clients to avoid authentication.
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* Address verifier interface extended to include authentication information.
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* New public mail relay section added to the user guide.
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* Example verifier scripts etc. added to the reference guide.
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1.0.0 -> 1.0.1
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--------------
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* In proxy mode unexpected client-side disconnects and timeouts result in `.bad` files [bug-id 659039].
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* Require successful `AUTH` before `MAIL FROM` when using `--server-auth`.
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* Better word-wrap on `--help` output.
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* Use of RedHat's `functions` code, and support for `chkconfig`, added to the `init.d` script.
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* Builds with gcc3.2 (1.0.0-pl5).
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* Fix for files left as `busy` after a connection failure in proxy mode [bug-id 631032] (1.0.0-pl3/4/5).
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* Trivial documentation fixes (1.0.0-pl3).
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* Fix for the double-dot escape bug in the client protocol [bug-id 611624] (1.0.0-pl2).
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* Fix build when using gcc2.96 rather than gcc2.95 (1.0.0-pl1).
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* Fix default spool directory in example scripts (1.0.0-pl1).
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0.9.9 -> 1.0.0
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--------------
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* Briefer `--help` output; works with `--verbose`.
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* Option to listen on a specific network interface (`--interface`).
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* Option for an external address verifier program (`--verifier`).
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* Some Linux Standard Base stuff added to the `init.d` script.
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* Pid files world-readable and deleted on abnormal termination.
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* Compiles with gcc 3.0 and intel 6.0.
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* Autoconf tweak for MacOS X.
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* Corrected the `Received:` typo [bug-id 572236].
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* EHLO response parsing is now case-insensitive [bug-id 561522].
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* Fewer missing-secrets warnings [bug-id 564987].
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0.9.8 -> 0.9.9
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--------------
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* More flexible logging options (`--verbose` and `--debug` work better).
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* File Hierarchy Standard ([FHS][]) option for `configure` (`--enable-fhs`).
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* FHS-compatible RPMs.
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* Spool files writeable by pre-processor when server started as root.
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* Default directories in executables and scripts come from `configure`.
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* The `init.d` script is renamed `emailrelay` (was `emailrelay.sh`).
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* Man pages are gzipped when installed.
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* Fix for access violation under Windows NT when client disconnects.
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* Use of event log when compiled on Windows NT.
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* Fix for info-after-flush bug when using the administration interface. [rc2]
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* New `resubmit` script. [rc2]
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* Submit utility works under Windows. [rc2]
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* Improved Windows project files. [rc2]
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0.9.7 -> 0.9.8
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--------------
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* Fix for running pre-processor (`--filter`) as root.
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* Ignore bogus `AUTH=LOGIN` lines in EHLO response.
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* Submit utility improved to work with mutt.
|
|
* Installation of submit man page.
|
|
|
|
0.9.6 -> 0.9.7
|
|
--------------
|
|
|
|
* CRAM-MD5 authentication mechanism added.
|
|
* Revoke root permissions at start up, and reclaim them when needed.
|
|
* Allow mail pre-processing (`--filter`) when started as root.
|
|
* Domain-override switch (`--domain`) added.
|
|
* Non-privileged user switch (`--user`) added.
|
|
* Better handling of NarrowPipe exception (ie. 8-bit message to 7-bit server).
|
|
* Allow null return path in MAIL-FROM.
|
|
* Reject recipients which look like `<user>@localhost` (as used by fetchmail for local delivery).
|
|
* Treat recipients which look like `postmaster@localhost` or `postmaster@<fqdn>` as local postmaster.
|
|
* Optional timestamps on log output (`--log-time`).
|
|
* Fix EHLO to HELO fallback for 501/502 responses in client protocol.
|
|
* Submission utility `emailrelay-submit` added.
|
|
* HTML4.0 compliant HTML documentation, using CSS.
|
|
|
|
0.9.5 -> 0.9.6
|
|
--------------
|
|
|
|
* SMTP AUTHentication extension \-\- LOGIN mechanism only.
|
|
* Client-side protocol timeout.
|
|
* Client-side connection timeout.
|
|
* Preprocessor can cancel further message processing.
|
|
* Client's IP address recorded in envelope files.
|
|
* Multiple hard-coded listening addresses supported at compile-time.
|
|
* Fix for automatic reopening of stderr stream.
|
|
|
|
0.9.4 -> 0.9.5
|
|
--------------
|
|
Windows fixes and improvements...
|
|
|
|
* system-tray + dialog-box user interface
|
|
* fix for dropped connections
|
|
* fix for content file deletion
|
|
* fix for directory iterator
|
|
|
|
0.9.3 -> 0.9.4
|
|
--------------
|
|
|
|
* Fixed memory leak when no `--log` switch.
|
|
* Windows build is more `gui` and less `command-line`.
|
|
* `Info` command added to the administration interface.
|
|
* Doxygen files removed from binary RPM.
|
|
|
|
0.9.2 -> 0.9.3
|
|
--------------
|
|
|
|
* Proxy mode (`--immediate` and `--as-proxy`).
|
|
* Message pre-processing (`--filter`).
|
|
* Message store classes better separated using abstract interfaces.
|
|
* Improved notification script, with MIME encoding.
|
|
* Builds with old 2.91 version of gcc.
|
|
|
|
0.9.1 -> 0.9.2
|
|
--------------
|
|
|
|
* Better autoconf detection.
|
|
* Workround for FreeBSD uname() feature.
|
|
* Added missing `.sh_` files to the distribution.
|
|
* Fixed a benign directory iterator bug.
|
|
* Use of gcc's `exception` header.
|
|
|
|
0.9 -> 0.9.1
|
|
------------
|
|
|
|
* Improved documentation from doxygen.
|
|
* More complete use of namespaces.
|
|
* Experimental compile-time support for IPv6.
|
|
|
|
|
|
[DNSBL]: https://en.wikipedia.org/wiki/DNSBL
|
|
[FHS]: https://wiki.linuxfoundation.org/lsb/fhs
|
|
[PAM]: https://en.wikipedia.org/wiki/Linux_PAM
|
|
[POP]: https://en.wikipedia.org/wiki/Post_Office_Protocol
|
|
[RFC-2920]: https://tools.ietf.org/html/rfc2920
|
|
[RFC-3030]: https://tools.ietf.org/html/rfc3030
|
|
[RFC-3848]: https://tools.ietf.org/html/rfc3848
|
|
[RFC-5782]: https://tools.ietf.org/html/rfc5782
|
|
[RFC-6531]: https://tools.ietf.org/html/rfc6531
|
|
[RFC-8314]: https://tools.ietf.org/html/rfc8314
|
|
[SMTP]: https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol
|
|
[SOCKS]: https://en.wikipedia.org/wiki/SOCKS
|
|
[TLS]: https://en.wikipedia.org/wiki/Transport_Layer_Security
|
|
|