453 lines
21 KiB
ReStructuredText
453 lines
21 KiB
ReStructuredText
**********************
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E-MailRelay Change Log
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**********************
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2.2 -> 2.2.1
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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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* 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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==========
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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.
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* Installation of submit man page.
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0.9.6 -> 0.9.7
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==============
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* CRAM-MD5 authentication mechanism added.
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* Revoke root permissions at start up, and reclaim them when needed.
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* Allow mail pre-processing (\ *--filter*\ ) when started as root.
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* Domain-override switch (\ *--domain*\ ) added.
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* Non-privileged user switch (\ *--user*\ ) added.
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* Better handling of NarrowPipe exception (ie. 8-bit message to 7-bit server).
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* Allow null return path in MAIL-FROM.
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* Reject recipients which look like *<user>@localhost* (as used by fetchmail for local delivery).
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* Treat recipients which look like *postmaster@localhost* or *postmaster@<fqdn>* as local postmaster.
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* Optional timestamps on log output (\ *--log-time*\ ).
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* Fix EHLO to HELO fallback for 501/502 responses in client protocol.
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* Submission utility *emailrelay-submit* added.
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* HTML4.0 compliant HTML documentation, using CSS.
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0.9.5 -> 0.9.6
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==============
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* SMTP AUTHentication extension -- LOGIN mechanism only.
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* Client-side protocol timeout.
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* Client-side connection timeout.
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* Preprocessor can cancel further message processing.
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* Client's IP address recorded in envelope files.
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* Multiple hard-coded listening addresses supported at compile-time.
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* Fix for automatic reopening of stderr stream.
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0.9.4 -> 0.9.5
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==============
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Windows fixes and improvements...
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* system-tray + dialog-box user interface
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* fix for dropped connections
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* fix for content file deletion
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|
* fix for directory iterator
|
|
|
|
0.9.3 -> 0.9.4
|
|
==============
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|
|
|
* 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-3848: https://tools.ietf.org/html/rfc3848
|
|
.. _RFC-5782: https://tools.ietf.org/html/rfc5782
|
|
.. _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
|
|
|