[CentOS] sendmail and relaying

Thu May 27 21:27:51 UTC 2010
Paul Heinlein <heinlein at madboa.com>

On Thu, 27 May 2010, Jerry Geis wrote:

> I think my sendmail is not correctly set. It says the default is to
> disallow relaying.
> I am running centos 4.8 and I think sendmail is relaying for anything.
>
> Based on this:
> http://www.sendmail.org/~ca/email/chk-89f.html#RELAYING
>
> I added|:
> FEATURE(relay_hosts_only)
> to my sendmail.mc file and restarted sendmail. I am still seeing
> connects that get relayed and are
> not in my /etc/mail/access file.

I assume that means you got a rebuilt sendmail.cf before restarting 
sendmail, but you'll want to make sure.

I also assume that you've defined the access_db feature in your 
sendmail.mc file.

That said, I don't include the relay_hosts_only FEATURE at all. I just 
add the IP addresses of the hosts that can relay into the access file, 
e.g.,

1.2.3.4		RELAY

Works for me.

-- 
Paul Heinlein <> heinlein at madboa.com <> http://www.madboa.com/