postfix-users January 2012 archive
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Postfix very slow accepting a mail having a massive recipient list
From: Simone Ruffilli <sruffilli_at_nospam>Date: Wed Jan 18 2012 - 09:29:29 GMT
To: postfix-users@postfix.org
Hello everyone,
whenever I submit to my postfix server a mail having a massive (~15k)
recipient list, it takes forever to accept and start delivering it.
I've done everything in the checklist (namely DNS caching), but it seems
like the problem is not related to a DNS issue: tcpdump-ing port 53
while sending such email, does not show the huge traffic I'm expecting.
Has it something to do with address validation (which, if I understood
correctly, is only enabled by reject_unverified_*, absent from my
configuration)?
Is there anything else I can check?
Thank you.