[rt-users] temp files leftover in /tmp sucking up all space

[Vivek Khera]

I have my max attachment size set to 3Mb.  Occasionally, I get a  
"brilliant" customer who decides to email a 5 or 7 Mb attachment to  
our RT (running 3.2.3).  What happens is that some temp file is  
created in /tmp of a huge size, and then rt-mailgate dies.  The mail  
logs show something like this:


Oct  3 03:02:54 w01 postfix/local[28234]: 9F290362CA: to=<MUMBLE>,  
relay=local, delay=257901, status=deferred (temporary failure.  
Command output: An Error Occurred =================  500 Server  
closed connection without sending any data back )

and the temp file is left sitting there sucking up valuable space.   
Eventually, after the mail server retries that message a handful of  
times, /tmp fills up and all heck breaks loose.

What can I do to protect myself from this?  Can mailgate do the usual  
open/delete/use tempfile trick that make unix special?  Or do I need  
to bump up the maxmem setting for mail processes or something?