Am 02.12.2010 23:08, schrieb Stan Hoeppner:
Martin Kellermann put forth on 12/2/2010 6:08 AM:
and there's a 5 sec. delay ... seems way too long to me for just
checking the recipient...!?
That delay should be no longer than what a typical delivery to the
Exchange server would be. Since no message is sent, it should be
shorter by quite a bit. I would guess the delay is within the Exchange
server, not Postfix, so you may need to do some sleuthing on the Exch
server to see what it causing the delay.
yes, it was on the exchange side - the delay is configurable per domain.
thanks.
PS: should unverified_recipient_reject_code set to 450 or 550 ?
You should probably leave this at the defaults. As I understand it, the
default configuration will return a 5xx for "unknown user" and a 4xx if
the query fails, due to network, etc.
