MPP v3.6

February 4, 2008

MPP 3.6 Feature List

Cloudmark 2 API implemented
MySQL code rewritten and new MySQL schema has been made default. New SQL scheme
provides better scalability for multi-domain environments and facilitates distributed
databases.
Qreview v3 is included in installation package. QReview provides web based access to
spam quarantines and email archives.
Added defer action for Thresholds / Autoblacklists. This feature introduces rate limiting,
as an abusive sender will no longer have their email blocked, but will see
an SMTP defer if Postfix Policy Server is in use, or their email will be deferred
in the mail queue.
Access Control Lists are made case-insensitive
Increased logging information by adding missing codes to decision path in log.
Configurable sender and recipient(s) for threshold alerts. Thresholds are useful
to identify outbound spammers, heavy inbound senders or to automatically black list
repeat, high volume spammers. Traditionally threshold alerts were only sent to the
postmaster, now the admin can set the address for alerts.
Automatic Client Host Black Listing of spam trap offenders. Spam traps are
regular expression based template addresses that are set for spammers. If
spammers hit the templates their IP addresses are automatically added to a black list.
Traditionally MPP spamtrap offenders were blocked on a per-group basis, now administrators
can choose to block them globally for all policy groups. This increases efficiency
in MPP processing and causes an automatic disconnect of spammers. A single spam trap
can block hundreds of thousands of dictionary attacks email in a day.
MPP has an incredibly powerful Postfix Policy Server and 3.6 offers Postfix olicy Server improvements.
3.6 offers better support of a standalone policy server by sending OK is sent instead of FILTER if
standalone mode is in use. 3.6 increases scalability by settings policy_threads_max to
400 by default and is limiting max threads to 400. Interoperability is improved
by changing OK response to DUNNO for Policy Server.