amavisd-new is a high-performance and reliable interface between MTAs and one or more content checkers, including virus scanners, and/or the Mail::SpamAssassin Perl module. It talks to an MTA via (E)SMTP or LMTP, or by using helper programs. No timing gaps exist in the design, which could cause a mail loss. It is normally positioned at or near a central mailer, not necessarily where the user's mailboxes and final delivery takes place.
|Tags||Communications Email Filters|
|Operating Systems||Unix POSIX|
Release Notes: A true SNMP agent and an MIB now allow monitoring amavisd process health and collecting mail traffic statistics by SNMP clients such as MRTG or Cacti. A SMTP-status response text for blocked mail is now customizable. DKIM signatures now protect important mail header fields from duplication. Parsing of a combined result from DSPAM has been fixed. A startup failure has been fixed when spam scanning has been disabled. Propagation has been corrected for an "Exceeded storage quota" exception from several decoders. A bug has been fixed in a milter setup, where a "1" was inserted in a header field instead of a correct string.
Release Notes: Loading of a policy bank based on a client's IP address is now implemented. Spam checking of long messages is now possible by passing a truncated message to a scanner. DKIM and DK signatures are passed intact to SpamAssassin 3.3 even when a message is truncated. Support for spam scanners other than Mail::SpamAssassin is now available by using a @spam_scanners list. CRM114 is now supported, either as a SpamAssassin plugin, or by directly calling it instead of or in addition to SpamAssassin. External spawned programs can now be used as spam scanners, currently supported are CRM114 and DSPAM.
Release Notes: Detection of nonstandard bounces was improved, allowing this release to kill more third-party backscatter without sacrificing reliable acceptance of genuine DSN and MDN. The backscatter processing rate was greatly improved by avoiding SA processing of killed bounces. A DKIM documentation section was rewritten to prompt more wide-spread use of DKIM signing by amavisd. A bug was fixed that could let the SMTP protocol get out-of-step when SMTP connection cache is enabled. Compatibility with SpamAssassin 3.3 (CVS head) was regained, and compatibility with Perl 5.10.0 was tested and confirmed.
Release Notes: Default SQL clauses now join tables using both the partition_tag and the mail_id fields, meeting needs for MySQL database partitioning. A data type mismatch between SQL tables was fixed in README.sql-mysql. Bounce-killer's false positives are now avoided in multipart/mixed messages with an attached mail message. Privileges were dropped too early when chrooting, causing chroot to fail. Access to uninitialized data in amavis-milter was fixed. An new placeholder allows organizing a quarantine by week number. A do_ascii decoder was disabled in the default list. The use of my_require was reverted.
Release Notes: DKIM signing and verification is now natively supported. Policy banks based on DKIM-validated author address offer whitelisting and bypassing of banning checks. Backscatter bounces can be killed based on pen pals lookups. The SQL database was made partitionable. SA logging is merged with native logging, along with a SA 3.3 timing report. Messages from a quarantine can be released as attachments. Basic support for abuse reporting was added. TLS is supported. Amavisd-nanny and amavisd-agent re-open a database on amavisd restarts. p0f-analyzer.pl was updated to support source port number in queries.