Software Update: MailScanner 4.48.4

MailScanner is an open source filter to expel spam and viruses from incoming e-mail traffic. It uses SpamAssassin in conjunction with white and black lists to filter spam. ClamAV is included for filtering viruses, but support for other virus scanners such as BitDefender, McAfee and Sophos is present. For more information, we refer you to this Faq-O-Matic. The developer has pushed out version 4.48.4 with the following announcement:

Released stable version 4.48.4. Major new feature this month is a rearrangement of how the spam.assassin.prefs.conf is used. This is now linked into the site-rules directory of SpamAssassin, so it is automatically read by SpamAssassin’s startup code, and no special file-reading code is done in MailScanner any more. The installation scripts should take care of all of this for you, don’t worry. There is also a new feature to reject selected messages with a more polite report than the 1-line error message generated by your MTA when it rejects a message.

New Features and Improvements:

• Added a new configuration option “Reject Message”. This is designed to be used with a ruleset. Any message matching the ruleset will be deleted and the “rejection.report.txt” email message will be sent back to the original sender of the offending message. To save a copy of the message as well as reject it, use the “Archive Mail” setting.
• Rearranged SpamAssassin spam.assassin.prefs.conf file, it is now read by SpamAssassin via a link called “mailscanner.cf” in the site_rules directory. It is no longer read directly by MailScanner, it is just read by Spam-Assassin during its normal initialization process.
• Enabled blocking of messages containing web bugs. Note this may have some false alarms, as a web bug is any image of 2×2 or smaller.
• Improved ClamAV module scanning by adding new suggestions from ClamAV author.
• Changed ClamAV parser to not generate warning output when it sees lines it wasn’t expected, as there are so many false positives that no-one ever looks at them anyway.
• Improved Sophos wrapper script to allow for EM library installations. No support for Sophos V5.0 yet.
• Upgraded ClamAV to 0.87.1.
• Added HTML::Parser to the list of Perl modules installed by my ClamAV+SA package so it can be used separately from MailScanner, without needing MailScanner to be installed first.
• Improved Clam+SA package and other installation scripts to create the soft-link whenever possible.
• Rewritten comments at the top of spam.assassin.prefs.conf.
• Speed ​​improvement changing &POSIX::WNOHANG to WNOHANG in sub Explode.

Fixes:

• Added “report-type” MIME attribute to spam notification multipart/report messages as the RFC says it should be there, and this lacking caused a problem in a few email apps. Thanks for [email protected] for this.
• Added missing “, 0777” from mkdir call in internal TNEF code.
• Fixed startup problems reading rulesets from LDAP on first message batch.
• Subject lines are all MIME-decoded properly now.