Missing deliveries...

[Nathanael Noblet]

Hello,
     I have a cyrus installation on a RHEL 4 machine. It has been  
running flawlessly since september. All users are stored in mysql,  
and the system is administered with web-cyradm. It has been fine  
until now, and I promise I have not changed anything. However one  
user has had intermitten trouble getting mail. I have been debugging  
the problem. Mail comes into to queue fine, it goes through clamscan  
and dspam and then should hit cyrus but doesn't seem to. I'd like to  
know if there is anyway I can specifically debug delivering through  
the lmtp unix socket. I'm not sure where the problem lies as dspam  
logs the email, but doesn't say anything about not being able to send  
it to cyrus. So I'd like to turn up the message logging specifically  
for that.

    Ideas?