I found some info but haven't tried it...   
      
   First I seached sysop.gui for headers... you see how to save headers for nntp   
   (news) messages and email messages.   
      
   Then I loaded sysop.txt into the joe editor, an editor I use.   I found this   
   with a search for headers in that file:   
      
   =========================   
   702      Global: FidoNet: BOGUS: Log headers(BMT)   
   Global: FidoNet: BOGUS: Log headers(BMT) _______________________   
   _______________________________________________________   
      
   If this option is enabled, BMT will log info about messages passing your   
   system.   
   ==========================   
      
   Sounds like it's what you are looking for but I can't try it right now.. It   
   could be for email again?  Not sure.   
      
   Take care,   
   Janis   
      
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