You can do an NSLookup or a Dig using a program like Sam Spade on their DNS
server.  Just look for the MX record and that will be the IP of the mail server.
You can also send a message to a false user on their mail server and when it
returns the Mail Undeliverable message, the IP address of the server should be
present in the routing information.

You can find the DNS server by going to http://rs.internic.net and searching for
their domain name.

-Robert




"J. T. B." <[EMAIL PROTECTED]> on 10/12/99 12:23:57 PM

To:   [EMAIL PROTECTED]
cc:    (bcc: Rob Walker/SV/AUS/HARCOURT)

Subject:  Tracking a site





Hello e'body...

  I want to block ALL trafic from a particular site, including mail, http,
icmp, etc, etc...
  I have their web server blocked, but I can't track their mail server to
block that IP, I've tried the obvious, like PING MAIL.DOMAIN.COM, or PING
SMTP.DOMAIN.COM, etc...

Any ideas?

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