Problem with MailScanner, postfix and corrupt mails

[Robert Waldner]

Hi!

On two boxen, I constantly have mails which are, apparingly, damaged by
 MailScanner so that postfix, after picking them up again, quarantines
 them into its "corrupt"-folder.

When I `postcat` such a damaged mail, I invariably see the same
 pattern, which I think is best explained by an example:

.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
message_size:            9158             317               2               0
message_arrival_time: Mon Nov 15 22:28:40 2004
sender: sender at domain
named_attribute: client_name=mail.gmx.de
named_attribute: client_address=213.165.64.20
named_attribute: message_origin=mail.gmx.de[213.165.64.20]
named_attribute: helo_name=mail.gmx.net
named_attribute: protocol_name=SMTP
warning_message_time: Tue Nov 16 02:28:40 2004
original_recipient: user at domain
recipient: user at domain
*** MESSAGE CONTENTS 4C80A7375E ***
Received: from mail.gmx.net (mail.gmx.de [213.165.64.20])
...
<Received:- and other headers>

message_size:               0               0               0               0
message_arrival_time: Mon Nov 15 22:28:40 2004
sender: sender at domain
named_attribute: client_name=mail.gmx.de
named_attribute: client_address=213.165.64.20
named_attribute: message_origin=mail.gmx.de[213.165.64.20]
original_recipient: user at domain
recipient: user at domain
*** MESSAGE CONTENTS 4C80A7375E ***
Received: from mail.gmx.net (mail.gmx.de [213.165.64.20])
...
<all the various headers again, plus the actual message content this
 time>

X-host-MailScanner: Did not find any virus
X-host-MailScanner-SpamCheck: not spam,
        SpamAssassin (Wertung=0.108, benoetigt 5, AWL 0.00...)
X-MailScanner-From: sender at domain

<message content (no headers), again>
.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.

So, the pattern is
 postfix-headers
 *** MESSAGE CONTENTS queue-id ***
 normal mail-headers
 postfix-headers
 *** MESSAGE CONTENTS queue-id ***
 normail mail-headers
 mail content
 MailScanner-headers
 mail-contents again

Both boxen are i386 and run Debian Sarge, MailScanner 4.38.10-1/
 postfix 2.1.5-6 on one, 4.35.3-1/2.1.5-0 on the other. I don't see
 this happening on another box, which runs 4.37.7-1/2.1.5-5, but on
 sun4u instead of i386.

Any hints? The only thing I could google up was filesystem corruption,
 which I'm pretty sure I can rule out here. Judging from the position
 of the MailScanner headers, I'd guess it's MailScanner screwing up
 somehow, but since I don't know, I ask ;)

cheers+TIA,
&rw
--
-- A sendmail / by any other name
-- Would still / HELO just.as.swe.et
--                            - Greg



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