North American Network Operators Group
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mail service with no mx (was - Re: Computer systems blamed for feeblehurricane response?)

  • From: Roy Badami
  • Date: Tue Sep 13 19:21:03 2005 
    william(at)elan> Could you elaborate on how firewall will
    william(at)elan> determine if the connection is from mail server
    william(at)elan> or from telnet on port 25?

Perhaps because most telnet clients will attempt telnet option
negotiation?  If so one could avoid this by using a client such as
netcat...

	-roy