Hi all,

I'm testing a new debian (7.6) exim (4.80-7 from stable) server.  A few days 
ago it received 3 spam emails which exim was unable to deliver due to spool 
file errors:


 3d  118K 1XUwKC-0007u8-Tp <[email protected]>
    *** spool format error: size=3125 ***


I tracked this down to a line length error in the spool file.  Manually editing 
the spool file allowed exim to deliver it successfully:

Broken:
024  Subject: Invoice 276455
064  X-PHP-Script: ubhugueufi058F From: "Sue Mockridge" 
<[email protected]>
062  X-Sender: "Sue Mockridge" <[email protected]>

Fixed:
024  Subject: Invoice 276455
087  X-PHP-Script: ubhugueufi058F From: "Sue Mockridge" 
<[email protected]>
062  X-Sender: "Sue Mockridge" <[email protected]>



The two other emails had these spool file errors:

Broken:
031F From: [email protected]
105  p 2014 15:01:49 +0400
018  MIME-Version: 1.0

Fixed:
031F From: [email protected]
022  p 2014 15:01:49 +0400
018  MIME-Version: 1.0



Broken:
023  062T To: <[email protected]>,
        <[email protected]>

Fixed:
062T To: <[email protected]>,
        <[email protected]>



So far I've only seen these 3 emails cause this problem and the server has 
dealt with several thousand emails (mostly spam) since then.  Nothing in my 
exim config touches the spool files and no other programs are set to either.  I 
haven't been able to reproduce this problem with my own emails.

Does anyone have any suggestions?

Many thanks,

Matt.

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