Gianluca, > The boxes have a postfix instance which performs some > RBL+header+black/whitelist checks and then forwards to the local > amavisd-new instance listening on the usual port 10024
Make sure these RBL and DNS checks are not done again by a smtpd Postfix service on port 10025. > System load is split between 74%usr, 22% > sys and 3% idle (fairly constant on most boxes) > Mail which have long processing time exhibit an odd breakdown, > spending a huge chunk of that time in fwd-rcpt-to and sometimes > best_try_originator > > fwd-connect: 24 (0%)5, fwd-mail-from: 2 (0%)5, fwd-rcpt-to: 5094 (95%)99, > fwd-rundown: 3 (0%)99, There is certainly something fishy there on the Postfix side, taking 5 seconds to respond to a RCPT TO command. On the other hand, the 3% idle indicates that even if Postfix responded faster, the mail throughput probably wouldn't be increased by much. What is interesting is that in all of your shown log entries the initial fwd-* sections weren't followed by an actual mail transfer (write-header, fwd-data, fwd-data-end). This indicates that most likely these messages were actually rejected by Postfix smtpd on port 10025, probably because of some client/sender/recipient restriction (not header or body check, these come later). Check that you have all checks that were already performed once on port 25, turned off on porty 10025. Use local caching-only DNS server on each host. Try to match these events from the amavis log to those on the Postfix log. Mark ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ AMaViS-user mailing list AMaViS-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amavis-user AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 AMaViS-HowTos:http://www.amavis.org/howto/
