Hey
I got this strange problem with postfix 3.1.0.
I got this one server that doesn't get all the mails, queued for it. Some mails
gets the error in subject.
And if I do a tcpdump on the tcp stream I see this everytime:
(the content has been wiped for some information)
<start>
220 [794178adb94846f8975ac93c9a320e4a] SMTP Version: 1.3.1.34773 21:18:18 12.
august 2018
EHLO (removed)
250 [794178adb94846f8975ac93c9a320e4a] OK
MAIL FROM: (removed)
250 [794178adb94846f8975ac93c9a320e4a] OK
RCPT TO: (removed)
250 [794178adb94846f8975ac93c9a320e4a] OK
DATA
354 [794178adb94846f8975ac93c9a320e4a] Start mail input; end with <crlf>.<crlf>
Received: from Server (unknown [(removed)])
by Server (Postfix) with ESMTP id 41pBtg5rKGzqYnC
for (removed); Sun, 12 Aug 2018 10:32:27 +0200 (CEST)
MIMEVersion: 1.0
MIME-Version: 1.0
From: (removed)
To: (removed)
Date: 12 Aug 2018 10:32:27 +0200
Subject: (removed)
Content-Type: multipart/mixed;
boundary=--boundary_274246_f400b577-4e93-4ffd-b5ec-355c7a0b5059
----boundary_274246_f400b577-4e93-4ffd-b5ec-355c7a0b5059
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
----boundary_274246_f400b577-4e93-4ffd-b5ec-355c7a0b5059
Content-Type: application
.
</end>
As you can see the stream stops before the last mimepart is done. This is
captured with tcpdump on the server with postfix 3.1.0
We use SMTP protocol to transport small files, so the body of the mail is not
importen but the attachment is the actual message we want to transport.
This is only a problem with about 5-10% of the delivers to this one host. We
got about 40-50000 messages in and out, to many servers, everyday and only see
this problem with one host we try to deliver to.
If I do a postqueue -I on the queueid It still fails, but if I make the sender
resend it, so it is a whole new message in postfix, it goes fine without
problems.
So the question is, why does some of the mails fail on the server, with no
option to requeue them?
Med venlig hilsen
Thomas Kristensen
Storhaven 12 - 7100 Vejle
Tlf: 75 72 54 99 - Fax: 75 72 65 33
E-mail: t...@multimed.dk
