[CentOS] postfix - reject of incoming mail due to helo check??

Fri Feb 3 22:32:20 UTC 2012
Stephen Harris <lists at spuddy.org>

On Fri, Feb 03, 2012 at 11:17:29PM +0100, Reindl Harald wrote:
> Am 03.02.2012 22:58, schrieb Stephen Harris:
> > If your mail server talks to machine with IP address then should
> > it say HELO with the 10 address name or the 91 address name?
> if you are not too stupid your internl view and external view of
> dns-names is identical and there is no difference

*boggle* What?  Wow.  No.  Just no.  That won't even work on a
toy home network where your ISP sets the rDNS, it definitely won't
work on a large corporate network.  It only works in a trivial

If you're telling me that my internal mail servers must talk to each
other via the name pool-173-71-187-61.pitbpa.fios.verizon.net then...
well, never mind.