On So, Jul 04, 2004 at 11:37:43 -0500, lists <lists@???> wrote:
> -> -----Original Message-----
> -> From: exim-users-admin@???
> -> [mailto:exim-users-admin@exim.org] On Behalf Of Avleen Vig
> -> Sent: Saturday, July 03, 2004 3:45 PM
> -> To: Giuliano Gavazzi
> -> Cc: Exim User's Mailing List
> -> Subject: Re: [Exim] Rfc 2821 par 4.1.4 is this still valid
> -> or was it replace.
> ->
> ->
> -> On Sat, Jul 03, 2004 at 10:16:01PM +0200, Giuliano Gavazzi wrote:
> -> > >That's a fantastic interpretation of 2821.
> -> > >3.6:
> -> > > - The domain name given in the EHLO command MUST BE either a
> -> > > primary host name (a domain name that resolves to an A RR) or,
> -> > > if the host has no name, an address literal as described in
> -> > > section 4.1.1.1.
> -> > >
> -> > >It says nothing about resolving correctly as a PTR. In
> -> fact, that you
> -> > >can give an address literal implies that IP addresses
> -> should not be
> -> > >resolved back to a hostname.
> -> >
> -> > Greg hasn't mentioned or implied PTR records, indeed a "name"
> -> > (hostname) does not have PTR records (with the exception
> -> of course of
> -> > the IN-ADDR.ARPA zone).
> ->
> -> Well, you can't look up an IP address to a hostname (reverse
> -> DNS) unless it has a PTR record :-)
> So would a solution to the problem to make my RDNS say
> mail.efastfunding.com(66.226.235.118
> ) instead of efastfunding.com(66.226.235.118)
>
> In my case the only other thing I can do it put my mail server outside my
> firewwall or to install a new firewall just for the mail server which is
> kinda costly. If I must have DNS/RDNS both be the exact ip of the mail
> server then how the hell to you this if you have dozens of mail server in a
> company (ie hp.com,hotmail,yahoo,msn). I mean yes I exact a log error a
> sstated in the RFC but does it not say you can't deny and yes my helo should
> be stating mail.efastfundig.com which does resolve to 66.226.235.114 port 25
> only.
Give every machine an unique fully qualified domain name.
i.e. mail-1.domain.dns, mail-2.domain.dns, etc.
