[Mailman-Users] mailman + postfix = strange behaviour
kozlowsm at mini.pw.edu.pl
Thu Aug 20 20:12:10 CEST 2009
>> SMTP_MAX_RCPTS = 1
>> -- thanks Mark!)
>> helped. Still I'mnot sure why :-(
> It helps because of a bug in the underlying Python smtplib. See
> Your real problem is you have addresses on your list that Postfix
> thinks are undeliverable. The bug report linked above describes the
> After 20 invalid local recipients in one SMTP transaction, Postfix
> disconnects with a 421 Too many errors reply, but the Python smtplib
> module doesn't expect a disconnect after a 421 and gets out of sync
> with Postfix.
> Setting SMTP_MAX_RCPTS to any number less than 20 will avoid this
THANKS A LOT!!! Now it works and I do know why! Wonderful!
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