On 16/10/2012 16:16, John Reddy wrote: > >> Something isn't quite right with your setup. When you do the "HELO" command, the server should reply with something. For example: >> >> == >> $ telnet smtp.comcast.net 25 >> Trying 76.96.40.155... >> Connected to smtp.comcast.net. >> Escape character is '^]'. >> 220 omta12.emeryville.ca.mail.comcast.net comcast ESMTP server ready >> HELO comcast.net >> 250 omta12.emeryville.ca.mail.comcast.net hello [69.24.1.7], pleased to meet you >> == >> >> Does the mail server ever return anything back to you? > Sometimes, if you are traversing a firewall between you and the mail server the firewall blocks the connection because telnet uses the tcp PUSH flag. -- Regards, Giles Coochey, CCNA, CCNAS NetSecSpec Ltd +44 (0) 7983 877438 http://www.coochey.net http://www.netsecspec.co.uk giles at coochey.net