Postfix 2.6 running on OpenBSD works well as a mail server but there is one specific problem for which any advice is gratefully received.
cleanup takes a long time to complete when email with attachments is received via SMTP but not when mail arrives via pickup. This presently causes problems for our webmail users as their HTTP session will often timeout as postfix may take several minutes for email with relatively large (2-3mb) attachments. can anyone shed any light on why this might be? cleanup -v shows the delay occurs just after cleanup_header_callback with the delay proportional to attachment size. Delay will occur for any SMTP session, including those from both localhost and remote servers. No header or body checks are used at all for this postfix installation and I have tried setting receive_override_options=no_header_body_checks on the off chance but this did not affect the situation. Mar 21 20:33:44 imp postfix/cleanup[23289]: cleanup_header_callback: 'Content-Disposition: attachment; filename="test.bin"' Mar 21 20:35:19 imp postfix/cleanup[23289]: POP boundary ----=_20100321203343_12460 Included below are examples from /var/log/maillog of the delay via STMP and it's absence via pickup. postconf -n, master.cf, a log of cleanup -v for mail received by SMTP and the test attachment used are available from http://sigmasys.co.uk/postfix/ Kind regards, Dave Green /var/log/maillog Mar 21 20:06:52 imp postfix/smtpd[29129]: connect from localhost.sigmasys.co.uk[127.0.0.1] Mar 21 20:06:53 imp postfix/smtpd[29129]: 1BC4F4021E: client=localhost.sigmasys.co.uk[127.0.0.1] Mar 21 20:06:53 imp postfix/cleanup[8311]: 1BC4F4021E: message-id=<8cc287496c55fd09f946828073c2e728.squir...@mail.sigmasys.co.uk> Mar 21 20:08:30 imp postfix/smtpd[29129]: disconnect from localhost.sigmasys.co.uk[127.0.0.1] Mar 21 20:08:30 imp postfix/qmgr[2958]: 1BC4F4021E: from=<u...@domain>, size=2870865, nrcpt=1 (queue active) Mar 21 20:12:23 imp postfix/pickup[3623]: B939C4021F: uid=1234 from=<user> Mar 21 20:12:23 imp postfix/cleanup[291]: B939C4021F: message-id=<20100321201223.ga23...@imp.sigmasys.co.uk> Mar 21 20:12:23 imp postfix/qmgr[2958]: B939C4021F: from=<u...@domain>, size=2874566, nrcpt=1 (queue active)
