[TriLUG] mail server not accepting mail from my RR mail account

[Tanner Lovelace]

On Thu, 2003-02-13 at 10:24, Chris Merrill wrote:
> Just wanted to see if anybody else had run into this problem:
> (I'm running Postfix on RH7.3)
> 
> I recently changed my dynamic DNS service provider from DNS2GO
> to DynDNS.org.  After getting it setup, I tested sending myself
> mail - from my RR account to my account in the domain I am hosting
> on my box at home.  The mail was bounced.  I assumed that there
> was something wrong with my configuration - so I read the FAQs at
> DynDNS...which basically told me that if the machine resolving
> to mydomain.net is the mail server, then I don't need to configure
> MX records.  The mail server was working fine before I switched
> DNS providers.
> 
> Today I tried sending mail to the account from my work account and
> it got through.  It looks like mail coming from one of RR's servers
> is not allowed to my server.  This was not the case when I first
> configured Postfix on this machine (~14 months ago).
> 
> Has anyone else tried this lately?
> 
> If my conclusion is correct - then nobody with an @nc.rr.com
> (or @rr.com?) mail address can send mail to my server  :(

You did update your mail server definition of your hostname?
If your mailserver program (postfix, sendmail, whatever) thinks
something is going to a different hostname than what it expects,
it will bounce it.  Make sure your mailserver knows about your 
dyndns.org address and doesn't just think it's something like
....nc.rr.com.

Cheers,
Tanner
-- 
Tanner Lovelace | lovelace(at)wayfarer.org | http://wtl.wayfarer.org/
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