Re: Which setting controls wait time for initial server greeting? was, Re: Probably not a Postfix problem...?

2 msg	MASQUERADING FROM BUT NOT TO

Probably not a Postfix problem...?
\ Jason Witherspoon (16 Mar 2008)
. \ Jason Witherspoon (19 Mar 2008)
. . \ (Wietse Venema) (19 Mar 2008)

3 msg	Quick question with user/virtual aliases.
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Subject:	Re: Which setting controls wait time for initial server greeting? was, Re: Probably not a Postfix problem...?
Group:	Postfix-users
From:	(Wietse Venema)
Date:	19 Mar 2008

> Feb 25 09:59:25 www postfix/smtp[17620]: 3A513B5906E2: to=<me
> >, relay=mail.place.com[X.X.X.X]:25, delay=300,
> delays=0.12/0.03/300/0, dsn=4.4.2, status=deferred (conversation
> with mail.place.com[X.X.X.X] timed out while receiving the initial
> server greeting)

What genius is telling you that 300s is not enough? These
are the the recommended timeouts per RFC 1123.

o Initial 220 Message: 5 minutes
o MAIL Command: 5 minutes
o RCPT Command: 5 minutes
o DATA Initiation: 2 minutes
o Data Block: 3 minutes
o DATA Termination: 10 minutes.

MTAs that can't respond within these deadlines will experience
serious inter-operability problems.

For a list of default Postfix settings, see:

% postconf -d | grep 'smtp_.*_timeout'

See "man 5 postconf" for details.

Wietse