On 7/7/2014 12:36 PM, btb wrote: > On 2014.07.07 12.39, Wietse Venema wrote: >> Find out why it takes 6.2 seconds to connect over TCP and to >> complete the SMTP handshake with the remote SMTP server. > > given postscreen_greet_wait, it's a coincidence that the remote > server's postscreen logs show that same delay ~6 second delay, but > list it as PASS OLD: > > Jul 6 08:26:23 mta1 postfix/postscreen[16943]: CONNECT from > [10.36.40.26]:45643 to [10.3.70.5]:25 > Jul 6 08:26:29 mta1 postfix/postscreen[16943]: PASS OLD > [10.36.40.26]:45643 > > the timing seems to suggest postscreen, but obviously PASS OLD says > otherwise. other PASS OLD log entries show no such delay. i'll > investigate further. > > in the mean time, how can i configure postfix to wait longer for > verification? > > -ben
The controls are: http://www.postfix.org/postconf.5.html#address_verify_poll_count (default 3) http://www.postfix.org/postconf.5.html#address_verify_poll_delay (default 3s) Use great care when adjusting these. If postfix waits too long for address verification replies, it can cause a denial of service by keeping all the smtpd workers busy doing nothing. The better solution is to identify and fix your network delay. -- Noel Jones
