email in exim incoming queue is not getting processed -- Please help

[Hancock, Scott]

Greetings all,

This is a restate of a previous help request.

Exim incoming has written a pile of messages to
/var/spool/exim/incoming/input.

For some reason mailscanner is not acting on these messages.

Any guidance on how to troubleshoot or information on under what
conditions mailscanner would not find or accept these files would be
greatly appreciated.

Debian sarge
Exim 3.36
MS 4.13
Sa 2.44

All new incoming mails are scanned and delivered.  

exim -bp  shows the mail in the incoming directory without any errors.
The queue originally had 1500 unscanned emails a Mainscanner restart
delivered half of these but I still have about 700 waiting for deliver.

I'll gladly post any conf files.  

Please help.

Scott Hancock