D wrote: > Nope, quite the contrary..I'm looking to write a simple program for a > client of mine that will, among other things, verify that their > clients' email servers do not have open relays. > I usually test it like this:
[EMAIL PROTECTED]:~> telnet mail.huygenslyceum.nl smtp Trying 172.16.64.12... Connected to mail.huygenslyceum.nl. Escape character is '^]'. 220 mail.huygenslyceum.nl ESMTP Sendmail 8.12.11/8.12.11; Fri, 17 Feb 2006 10:03:46 +0100 (CET) ~> helo 172.16.64.1 250 mail.huygenslyceum.nl Hello [172.16.64.1], pleased to meet you ~> mail from: [EMAIL PROTECTED] 250 2.1.0 [EMAIL PROTECTED] Sender ok ~> rcpt to: [EMAIL PROTECTED] 550 5.7.1 [EMAIL PROTECTED] Relaying denied. IP name lookup failed [172.16.64.1] To get a more verbose explanation, google for smtp + telnet. hth -- mph -- http://mail.python.org/mailman/listinfo/python-list
