[Pkg-dspam-misc] Bug#688853: dspam: long line in message body causes '530 5.2.0 Message is empty. Aborting.'

[Andrey]

Package: dspam
Version: 3.10.1+dfsg-3~bpo60+1
Severity: critical


dspam sends '530 5.2.0 Message is empty. Aborting.' while receiving 
incorrect spam message with long-long line, for example with length 
about 300K bytes:

________________________________________________________________
Content-Type: application/octet-stream; name="Pricediler.xls"
Content-Transfer-Encoding: base64
Content-Disposition: attachment

0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAAPgADAP7/CQAGAAAAAAAAAAAAAAAJAAAATwQAAAAAAAAAEAAA/v///wAAAAD+////AAAAAEYEAA...(whole 
length of the line is about 300K bytes)
________________________________________________________________

It causes MTA (exim in my case) to fail with 'Broken pipe' message for 
dspam router and use retries to send other emails to other recepients, 
so messages are deferred and delivered with delay.

-- System Information:
Debian Release: 6.0.5
   APT prefers stable-updates
   APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash