postfix-users May 2014 archive
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postfix-users: Re: lost connection with ]server] while receiving

Re: lost connection with ]server] while receiving the initial server greeting

From: Wietse Venema <wietse_at_nospam>
Date: Sat May 03 2014 - 11:47:05 GMT
To: Postfix users <postfix-users@postfix.org>

postfix@nisny.com:
> There is NO NAT or firewall.
>
> relay=mx4.icloud.com.akadns.net[17.172.34.67]:25, delay=177,
> delays=0.3/0.01/177/0, dsn=4.4.2, status=deferred (lost
> connection with mx4.icloud.com.akadns.net[17.172.34.67] while receiving
> the initial server greeting)

 0.3 = No congestion within the Postfix queue.
0.01 = TCP completes immediately.
 177 = Postfix waits for the 220 greeting until the connection is dropped.

I suggest that you take Postfix out of the loop, and diagnose this
further with plain old telnet.

        Wietse