[CentOS] help with sendmail closing relay

[Ross Walker]

On Jun 4, 2010, at 2:31 PM, Jerry Geis <geisj at pagestation.com> wrote:

> Jerry Geis wrote:
>>>
>>> Never setup sendmail myself but google talks about:
>>>  makemap hash /etc/mail/access < /etc/mail/access
>>> Did you do it?
>>>
>>
>> Rebuilding access.db gets done by typing "make" in the /etc/mail
>> directory.
>> It has been done.
>>
>> Jerry
>>
> ok - going crazy I made a copy of my access file, and removed  
> everything
> execpt localhost. restart sendmail of course.
> re-tried the abuse.net/relay.html site and it did not relay....
>
> So then something in the file must be the issue. I put everything back
> as it was, restart and tried again. it relayed.
>
> I then commented the line:
> 192.168.1   RELAY
>
> and restarted and retried. It did not relay.
>
> I thought this line was a wildcard for anything 192.168.1.X - not open
> the world for relaying.

If your NAT'ting these through the firewall, then the world will be  
coming in on 192.168.1...

Have an internal email relay for outbound and add that sever's ip  
address to the table instead of the wildcard.

-Ross