Quoting Munir Nassar (nassarmu at redconcepts.net):
> I just got this email without To: field or a From: field
> 
> here is the header from the mbox file:

Snarf uvscan and see if it's a virus.
-- 
Minneapolis St. Paul Twin Cities MN        | Phone : (952)943-8700
http://www.mn-linux.org Minnesota Linux    | Fax   : (952)943-8500
Key fingerprint =  6C E9 51 4F D5 3E 4C 66 62 A9 10 E5 35 85 39 D9