It works 100% fine from outside of the network. I'm getting the problem from some off my users on a private subnet. The thing that baffles me is that they can connect to any other server on the same IP subnet as the mail server with no problems. -----Original Message----- From: David C. Hart [mailto:DCH@xxxxxxxxxxx] Sent: Thursday, November 06, 2003 4:34 PM To: Stephan Viljoen Cc: Iptables Mailing List Subject: Re: Weird routing problem. (I think) On Thu, 2003-11-06 at 09:21, Stephan Viljoen wrote: > Some off my clients started complaining that they're having problems > connecting to my mail server. Now all this worked fine up until > yesterday. I'm not blocking any ports nor am I blocking ICMP on the > network. > Rather slow but . . . [root@mail2 root]# telnet 217.10.176.138 25 Trying 217.10.176.138... Connected to 217.10.176.138. Escape character is '^]'. EHLO ***** 220 gabswave.net ESMTP Exim 4.24 Thu, 06 Nov 2003 16:28:14 +0200 501 Syntactically invalid EHLO argument(s) quit 221 gabswave.net closing connection Connection closed by foreign host.