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Re: RrDNS-v-PTR
From: Sam Jones <sam_jones90_at_nospam>Date: Tue Apr 03 2012 - 15:41:45 GMT
To: postfix-users@postfix.org
On Tue, 2012-04-03 at 10:31 -0500, Stan Hoeppner wrote:
> On 4/3/2012 9:56 AM, Sam Jones wrote:
> > Good Afternoon,
> >
> > My senior tech and I have been having a squabble over PTR, Hostnames and
> > reverse mapping.
> >
> > If you have a client connect from 1.2.3.4 and perform a host name lookup
> > on that, so you get back host.example.com, would it impact on mail if a
> > forward query for host.example.com returned multiple A records, say
> > 1.2.3.4 & 5.6.7.8 alternating between the top of the result sets in a
> > round robin?
>
> It's possible, but the devil is in the details, which you did not
> provide to us.
It really was just a general question as to how an MTA, specifically
Postfix, would respond if multiple alternating A records were returned
in respect of a forward DNS request for a PTR/Hostname connection
return.
If you don't know, that's fine - just say so. You don't need to let
yourself down with the old flame:
>
> This was included in your list welcome message.
> http://www.postfix.org/DEBUG_README.html#mail
> Please read it and post the relevant information it instructs you to.
> In this case, at minimum, we need to see the SMTP responses from the
> remote MTA.
>
Because I actually had gone through that, which is why I was able to
find the configuration value that could impact in such a scneario.
I do apologise for the distress, offence and disturbance my rude stupid
question has obviously caused you. I won't repeat it and I hope you can
forgive me.