> From: victor.ducho...@... > On Wed, Apr 22, 2009 at 11:57:27AM -0400, wiskbr...@... wrote: > >> My users NDR's are not arriving until the 5 day retry period has lapsed, > > http://tools.ietf.org/html/rfc5321#section-4.5.4.1
Thanks, I've been needing to re-read lots of other RFC's lately :-( >> creating issues whereby time critical emails are not getting out due to >> their unawareness of this matter. > The customer has somewhat unrealistic expectations of email as an > instant-messaging protocol. This said, retry times of ~2 days are not > unreasonable. However, lowering this to hours or minutes is not. >> Here is some of my postconf output, hopefully the important/relevant parts: > > Don't make random configuration changes when you don't know what you > are doing. Undo *all* the changes you made. They having to do with > error handling in outgoing mail... I've undone the one change that I had made, thanks. >> unknown_hostname_reject_code = 550 >> unknown_local_recipient_reject_code = 450 > Set this one to 550, to help remote senders not needlessly retry > undeliverable mail they are sending to you. Done, thanks! >> unknown_relay_recipient_reject_code = 550 >> unknown_virtual_alias_reject_code = 550 >> unknown_virtual_mailbox_reject_code = 550 > >> Anything I must change here in order for outbound email to get quick NDR's? > > # Do not set lower! > maximal_queue_lifetime = 2d Done, and am also considering Charles Marcus' response (attached below): [CM] Anyway, I think what you want to set is delay_warning_time. I set mine to 15 minutes: [CM] delay_warning_time = 15m Seems pretty reasonable to be, though I may set this to 90m instead. Thank you Victor and Charles. .vp
