Download link: http://www.courier-mta.org/download.php
Summary of changes since the previous release.
* This release adds support for custom IMAP keywords. A new command-line utility, maildirkw, allows other applications to manually set/clear custom keywords on messages.
* IMAP keywords may also be set with maildrop.
* webmail: dynamically-generated HTML should now be HTML 4.0/XML compliant.
* Fixed a bug in MySQL and PostgreSQL authentication modules that results in memory corruption if the custom SQL clause option is enabled. Anyone using MySQL and PostgreSQL with a custom SQL clause option should upgrade to this release.
* webmail: HTML templates may now specify alternative character set codes. The default HTML templates are now tagged as either ISO-8859-1 or UTF-8. UTF-8 capable browsers will now automatically receive UTF-8 content, while browsers that do not have UTF-8 will be gracefully downgraded to ISO-8859-1 content.
* webmail: Internal cleanup of GnuPG support. No externally visible changes, except that all GnuPG functions might appear to be slightly faster, as some internal temporary files are eliminated.
* Upgrading from earlier versions of the POP3 server will now preserve POP3 UIDs.
* There's a memory leak in libfam, at least on Linux (other platforms may/may not be affected), which affects the IMAP server. Reported bug upstream, changed the code to minimize the leakage, as much as possible.
* Minor tweaks to the courierfax module, making it possible to use a calling card to send faxes.
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