On 11/7/2012 8:47 PM, Josh Berkus wrote: > On 11/7/12 6:37 PM, Jeroen Geilman wrote: >> On 11/07/2012 10:03 PM, Josh Berkus wrote: >>>> Non-deliverable mail is returned to sender when either the remote >>>> server gives a 5xx "undeliverable" response, or $max_queue_lifetime >>>> expires. >>>> >>>> Undelivered mail will hang around in the queue if the remote server >>>> gives a 4xx "retry" response, or the remote server exists but is >>>> unreachable, or if you've set soft_bounce=yes. So which is it? >>> Oh, thanks! So if I set $max_queue_lifetime lower, then it should clear >>> out those 4xx bounces? What about unreachable target servers? >>> >> >> Noel asked you which of the possible reasons he listed causes your queue >> to fill up. >> 4xx are not bounces - they are deferrals, which are then queued. > > Well, it's actually both. I have both deferrals and unreachable > servers. It's not soft_bounce, though. >
max_queue_lifetime will reduce the amount of time undeliverable mail hangs around in the queue, regardless of the reason. You can set it lower, but with caution -- postfix can't tell the difference between a domain that will never work and some legit domain that happens to be down for maintenance/power/whatever temporary reason. The default is 5 days, with good reason. for domain "squatters" that register a misspelled popular domain with an A record but no mail service, handle them by adding a transport entry pointing to the error: service. This will cause problems if the domain in question ever goes legit... you can decide how likely that is yourself. Some popular ones with my users; I expect others have different local favorites. # transport comcoast.net error:5.1.2 maybe you mean comcast.net hotmani.com error:5.1.2 maybe you mean hotmail.com kincle.com error:5.1.2 maybe you mean kindle.com htomail.com error:5.1.2 hotmail.com not htomail.com hotemail.com error:5.1.2 hotmail.com not hotemail.com vzwpics.com error:5.1.2 maybe you meant "vzwpix.com" vzxpix.com error:5.1.2 maybe you meant "vzwpix.com" guno.com error:5.1.2 maybe you meant "juno.com" xomcast.net error:5.1.2 try "comcast.net" instead c0mcast.net error:5.1.2 try "comcast.net" instead cdomcast.net error:5.1.2 try "comcast.net" instead cherter.net error:5.1.2 try "charter.net" instead charther.net error:5.1.2 try "charter.net" instead vahoo.com error:5.1.2 did you mean yahoo.com? at.net error:5.1.2 try "att.net" instead -- Noel Jones
