Patrick Ahlbrecht wrote in a message to Kurt Wismer:
KW>were you to route mail on a dos machine you'd be able to reroute with a
KW>trojan...
 PA> And that is the point ;). DOS normally doesn't do very much except
 PA> giving you a simple userinterface to the Hardware. So if a DOS
 PA> system routed mail, ok, you could re-route it (assuming you know
 PA> how this routing is done), but which DOS system does that kind of
 PA> thing ? So it is quite useless to write a DOS trojan which does
 PA> anything more than destroying data.
My BBS is a dos system. It handles a LOT of mail daily, sometimes to the tune 
of 2+Mb compressed. Sure, little of this is e-mail (maybe 1-2Kb 
uncompressed), but it sure makes a mess if the routing stuffs up. All a 
trojan would have to do is rename a few files (for a once-off re-route) or 
alter commands in my ROUTE.CFG file for my mail software, things like 
changing HOLD to CRASH (makes it send that mail out immediately) and/or 
changing '3:' to '2:' (send the mail to systems in Z2 if it can find a 
tch).
It could be bloody messy. If there's a little thought gone into it, it could 
find the current nodelist and re-direct mail to existing nodes making sure 
the system gets a few international toll calls in before it's caught (hell, 
even just swapping some of the phone numbers in the nodelist would be 
disasterous!)
This could be done in pascal, with the exe taking up less than 30Kb I'd 
estimate. Want me to do it and get a potentially buggy version out to you by 
the end of the week? Sooner probably, I've got most of the code already in a 
utility I am writing, wouldn't take more than a few hours absolute tops to 
adapt :-)
Cya..
Dave
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--- timEd 1.10
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