[Discuss] email bounce issue

[dsr at randomstring.org (Dan Ritter)]

On Tue, Jan 21, 2014 at 01:44:56PM -0500, Chandler, Scott wrote:
> We recently acquired part of another company. During the transition, I need to allow email through my Internet facing Linux email gateway from a specific host in the old company. This host was originally intended to be internal use only so there is no MX record. When the system sends a message into my environment, they get this reply:
> 
> 450 4.1.8 sender address rejected domain not found
> 
> Is there a way, on my system that I can tell postfix to accept mail from this host and or domain even though it has no MX record?
> 

Sure.

smtpd_client_restrictions =
        check_client_access /etc/postfix/smtpd_client_list
        permit_mynetworks
	...

and create /etc/postfix/smtpd_client_list:

aaa.bbb.ccc.ddd		OK

and after reload you should be good.

-dsr-