[69310] in North American Network Operators' Group
Re: Mailserver requirements
daemon@ATHENA.MIT.EDU (Daniel Roesen)
Mon Apr 5 17:43:35 2004
Date: Mon, 5 Apr 2004 23:42:28 +0200
From: Daniel Roesen <dr@cluenet.de>
To: NANOG <nanog@nanog.org>
Mail-Followup-To: NANOG <nanog@nanog.org>
In-Reply-To: <4071D058.7060806@nipper.de>; from arnold@nipper.de on Mon, Apr 05, 2004 at 11:32:08PM +0200
Errors-To: owner-nanog-outgoing@merit.edu
On Mon, Apr 05, 2004 at 11:32:08PM +0200, Arnold Nipper wrote:
> > I am surprised you don't have problems sending to AOL as well.
> > They don't accept email from servers that do not have reverse addresses.
> > I don't accept email from severs without reverse addressing.
>
> of course this server does have a reverse mapping. But this reverse
> mapped doamin does not have an MX record.
Does it have an A RR?
Anyway... it's a heuristic which definately does give false positives.
The only requirement is that IF a domain/host accepts mail there MUST be
a postmaster@ address.
Regards,
Daniel
