Question about a large volumn of errors I've been getting.

[Dragoncrest]

	Just a curiousity question actually.  Cause so far I haven't had any 
issues that I can see.  What's basically happened is in my daily reports 
I've been seeing a lot of these types of messages:

Jun  4 03:10:21 sendmail[76254]: h543AIjS076253: Fixed MIME 
Content-Disposition header field (possible attack)

	I know it's not an attack because the machine is tucked comfortably behind 
a firewall and sendmail is only available through localhost.  Mail is 
delivered to that box from external pop accounts via fetchmail.  One thing 
I have noticed a lot of lately is spam.  It has increased at least a good 
3-4x's what it was.  Spam assassin has been doing an awesome job of weeding 
it all out, but it has just been coming in droves and it's more like a 
small tidalwave now.  So, I was wondering if this was just related to the 
spam or if there's something else I should be looking into?  Like maybe 
fetchmail got borked or something.  So far everything seems to be running 
fine.  I just found this curious is all.  Thanks for the info.