On Wed, Jan 19, 2011 at 01:40:06PM -0500, Manuel Mely wrote:
> I'm having a weird problem here, when my email server tries to relay a
> message with multiple recipients to my relay email server, the latter closes
> the connection because one of the recipient domain doesn't work, it doesn't
> continues sending to the others recipient, the message is moved to the
> deferred queue. I'm sure this behavior must be changed, but i can figure out
> what is missing in my configuration. I need some help here.
Your relay host is violating the SMTP protocol by prematurely closing
the connection, and on top of that without even responding with a 5XX
error for the problem recipient (which Postfix would otherwise "remove"
from the queued list of recipients, and then succeed with the remaining
recipients when the message is retried).
The right answer is to use a less broken relay host. A work-around is
to set:
smtp_destination_recipient_limit = 1
Mail with an invalid recipient domain will still linger in your queue,
so you should perhaps add
reject_unknown_recipient_domain
to the top of your smtpd_recipient_restrictions, if the mail in question
enters your queue via SMTP (rather than local submission via sendmail(1),
or via qmqp).
--
Viktor.
