On Sun, Jan 18, 2009 at 12:26:46PM -0700, Gary V wrote: > Just as a matter of interest. On my Postfix system: > > a) Using deliver -e, Postfix bounces the message immediately 5.7.0 -> > Subject: Undelivered Mail Returned to Sender. Partial body: > "<t...@example.com>: permission denied. Command output: Quota exceeded > (mailbox for user is full)". Postfix does not retain the message. > > b) quota_full_tempfail=yes: defers the message with 4.3.0. If the user > makes room for the message, then it will eventually be delivered. If > they don't, then _eventually_ a bounce will be sent. In this case the > bounce is less informative. Partial body: "<t...@example.com>: > temporary failure". In the case where the message is not delivered, > using default settings in Postfix, the sender will be notified 5 days > after they sent the message. > > c) For over quota with a+b, it behaves the same way as b, but the > bounce notice will be more informative: Partial body: > "<t...@example.com>: temporary failure. Command output: Quota exceeded > (mailbox for user is full)". > > I would say this is expected.
You can also quota_exceeded_message to something like "4.2.2 Mailbox full" (or "5.2.2 ..."). This works whenever -e is specified, i.e. for a) and c), and you use Postfix 2.3 or later (see pipe(8)). > Each of the four possibilites has advantages and disadvantages, and > personally I think a) might be closest to "doing the right thing", but > it would be cool to have the option of deferring the mail (using > option a+b) and additionally have deliver immediately send a message > to the sender notifying them that their mail has been delayed due to > the recipient being over quota. Something like: This is also easy with Postfix, if you use delay_warning_time (see postconf(5)).
