[CentOS] Centos 4 / Postfix / SMTP

Chris Mauritz <> scribbled on Monday, May 09, 2005 7:47 AM:

> Nigel Kendrick wrote:
> 
>> 
>> 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
>> 
>> 
>> 
>> 
> 
> Can you telnet to port 25 of your upstream host from another "known
> working" system? 
> 
> Cheers,
> 
> C

What does iptables -L show you?

Can you ping a host outside your network (google.com for example)?

Mike