I am just starting with this kind of stuff, but, does dyndns have a valid mx entry in their dns pointing to your mail server? I have checked dig -t reynaldi.com and there is no entry for a MX server (Mail eXchange). I am a novice with this, so I can be absolutely wrong. But I would check it. Any suggestions from the very experts in the list? I am new to the list... Cheers, miguel El jue, 05-02-2004 a las 09:37, Arie Reynaldi Zanahar escribió:
I try to telnet from outside, but there's no response. From internal or my other servers that in one subnet, I get this answer telnet reynaldi.dyndns.org 25 Trying 202.152.21.230... Connected to reynaldi.dyndns.org. Escape character is '^]'. 220 arie.reynaldi.dyndns.org ESMTP Postfix
But from other place I got no response telnet reynaldi.dyndns.org 25 Trying 202.152.21.230... telnet: connect to address 202.152.21.230: Connection timed out
And in my /var/log/mail, there's no messages that shows any connection from ex. yahoo.com or any other servers.
I think it's firewall problem :(
Test it from outside with a
$ telnet yourserver.dyndns.org 25
If you get an answer like:
220 yourserver.dyndns.org ESMTP Postix
it is not a firewall problem. Then you will have to configure postifx correctly.
Christian
-- Arie Reynaldi Zanahar reyman@reynaldi.com