Jonathan Allen wrote: ...
If I try to connect to their SMTP port by hand: mirror!~ % telnet charter.net 25 Trying 64.192.190.12...
That is not the right way to do it. You'll have to look up their MX first: $ nslookup > set type=mx > charter.net ... charter.net mail exchanger = 10 mail.charter.net. Then you can try to telnet to port 25 to mail.charter.net: $ telnet mail.charter.net 25 Trying 209.225.8.224... Connected to mail.charter.net (209.225.8.224). Escape character is '^]'. 220 charter.net ESMTP server ready Tue, 13 Mar 2007 09:02:44 -0400 quit 221 charter.net ESMTP server closing connection Connection closed by foreign host. Note that the IP numbers differ. Mogens -- Mogens Kjaer, Carlsberg A/S, Computer Department Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark Phone: +45 33 27 53 25, Fax: +45 33 27 47 08 Email: mk@xxxxxx Homepage: http://www.crc.dk