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: Stefan Foerster <cite+postfix-users_at_nospam>
Date: Sun May 04 2014 - 10:24:07 GMT
To: postfix-users@postfix.org

> nk11p00mm-mx006.me.com.smtp: Flags [S], seq 3314275386, win 1400,
> options [mss 1460,nop,wscale 6,sackOK,TS val 170874802 ecr 0],
> length 0
> E..<.e@.@..........r.d.....:.......x...............
 
[...]

> I then did a capture of a telnet session to the same server on port 25:
>
> reading from file telnet.cap, link-type EN10MB (Ethernet)
> 2014-05-03 22:35:14.821306 IP smtp.bestwny.com.58803 >
> nk11p00-smtp-mx003.mac.com.smtp: Flags [S], seq 3396279601, win
> 65535, options [mss 1460,nop,wscale 6,sackOK,TS val 171198862 ecr
> 0], length 0
> E..<t.@.@.C........2.....o.1.......................

Wound you mind trying to remove "tcp_windowsize = 1400" from you
configuration (do not forget to issue a "postfix reload" afterwards!)?

Stefan