[CentOS] Not receiving root mail

[Les Mikesell]

On 8/23/11 3:51 AM, Anne Wilson wrote:
> >>
>> mydestination = $myhostname, localhost.$mydomain, $mydomain, xxx.lan, xxx.org
>
> This morning I restored the old main.cf, which uses the old network
> settings of xxx.net.  Now mail is being received, but sending mail is
> being refused by my server.  I have two sending profiles - one that
> sends to the server (CentOS 6), which then should use
> /etc/postfix/transport to separate local mail and external mail,
> sending the external mail to the ISP's smtp server.  The second
> profile is googlemail smtp, used when I'm away from home.
>
> Whichever I try to use I get a message that my mail server has refused
> the connection.  I'm still trying to work out why.  It sounds like
> authentication problem, but I can't see why it's happening.

Unless the next hop requires smtp authentication, the likely reason is that the 
'From: ' address doesn't have a DNS-resolvable domain name.

-- 
   Les Mikesell
    lesmikesell at gmail.com