Since friday the main incoming server of a friend was under a heavy load, always with more than 130 incoming connections and SYN_RECV. Some messages took more than 2 hours to be delivered to his users.
I set up a server to be his first secondary with qmail-scanner but without any scanner, then I found hundreds of mails with "no sender and no recips" but at least the time for incoming mails get down to 10 minutes.
Here is a log (not standard) of one of this messages:
18/01/2004 11:42:55:19075: +++ starting debugging for process 19075 by uid=81
18/01/2004 11:42:55:19075: incoming SMTP connection from via SMTP from 204.61.6.14
18/01/2004 11:42:55:19075: w_c: Ecco le headers :
Received: from dns01.oscn.net (HELO OSCNEXMAIL.oscn.net) (204.61.6.14)
by 0 with SMTP; 18 Jan 2004 10:42:55 -0000
Received: from mail pickup service by OSCNEXMAIL.oscn.net with Microsoft SMTPSVC;
Sat, 17 Jan 2004 17:52:37 -0600
Thread-Topic: Undeliverable: Eliminate Awful Headaches from a long night drinking
thread-index: AcPdVPw7uiqoT4ZkQvOl2OhMDpcwOw==
Return-Path:
From: "System Administrator" <[EMAIL PROTECTED]>
Sender: "System Administrator" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Subject: Undeliverable: Eliminate Awful Headaches from a long night drinking
MIME-Version: 1.0
Content-Type: multipart/report;
report-type=delivery-status;
boundary="----=_NextPart_000_15F090_01C3DD22.B1ACE330"
Content-Class: urn:content-classes:dsn
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
Message-ID: <[EMAIL PROTECTED]>
X-OriginalArrivalTime: 17 Jan 2004 23:52:37.0775 (UTC) FILETIME=[FC6191F0:01C3DD54]
Date: 17 Jan 2004 17:52:37
18/01/2004 11:42:55:19075: w_c: elapsed time from start 0.019901 secs
18/01/2004 11:42:55:19075: g_e_h: no sender and no recips.
18/01/2004 11:42:55:19075: ------ Process 19075 finished. Total of 0.032375 secs
Most of this messages have a subject like this:
Subject: Undeliverable: ......
The user <[EMAIL PROTECTED]> doesn't exist in my friend's domain.
And another interesting thing:
Received: from mail pickup service by OSCNEXMAIL.oscn.net with Microsoft SMTPSVC;
is always present, only changes the server.
Maybe there is another bug in 'Microsoft SMTPSVC'?
Salvatore
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