At 9:01 AM -0700 10/9/02, Carl Holmberg  imposed structure on a 
stream of electrons, yielding:
>Lately, I've been getting mail from what I suspect is a Windows worm 
>from various sources. It's especially irritating in that it uses my 
>own server's domain name in the HELO command. Based on the idea that 
>SIMS rejects HELO's when I edit the router for the appropriate 
>address, I added this to the router list:
>
>apple20.mhpcc.edu = error

Ummmm.... That's going to have some ugly results. Routing one's own 
server name to error should not be done casually.


>
>Didn't work.


Right, because SIMS doesn't really do anything other than adjust the 
Received header format based on the 'validity' of the HELO/EHLO 
argument. That's generally a good idea, since a lot of MTA's use 
really dumb HELO arguments that don't make any generalizable sense. I 
accept some blame for this, as I screamed at Vlad publicly on this 
list back around 1997 about a brief period where SIMS was trying to 
validate HELO.

It might be a very good idea for SIMS to modify that behavior a bit, 
and instead of trying to fully validate the HELO argument, just chuck 
out the obviously bogus case of using the server's own name or 
anything routed to error.

-- 
Bill Cole                                  
[EMAIL PROTECTED]


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