[CentOS] Centos 4 / Postfix / SMTP

[Nigel Kendrick]

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf
Of Chris Mauritz
Sent: 09 May 2005 13:36
To: CentOS mailing list
Subject: Re: [CentOS] Centos 4 / Postfix / SMTP


Nigel Kendrick wrote:

>I've just installed Centos 4 on an Acer G310 server - everything's gone 
>well except I'm not able to SMTP connect to my upstream mail server 
>(I've installed postfix + MailScanner) - I managed to find sort out the 
>dovecot side of things but SMTP remains quite silent - the maillog 
>shows an attempted connect but then a timeout:
>
>May  9 13:08:45 woking postfix/smtp[7895]: deliver_request_final: send: 
>"connect to mailhost.zen.co.uk[212.23.3.98]: Connection timed out" -1
>
>If I connect manually (telnet mailhost.zen.co.uk 25) nothing happens - 
>no response is shown and I presume if I left things for long enough I'd 
>see a timeout message? Here's the output from netstat -pant:
>
>  
>

Do you have the firewall turned on and filtering port 25?  If you can't 
telnet to the remote host port manually then you're getting filtered 
either on your host or on the remote host.

Cheers,

C

Nope - no firewall - I've just double checked:

[root at woking ~]# chkconfig --list | grep ip
iptables        0:off   1:off   2:off   3:off   4:off   5:off   6:off

Nigel