[arch-general] Sigurd rDNS broken

[Mike Sampson]

On Sun, Aug 9, 2009 at 8:43 PM, Pierre Schmitz<pierre at archlinux.de> wrote:
> Am Sonntag 09 August 2009 12:29:03 schrieb Pierre Schmitz:
>> Am Sonntag 09 August 2009 12:24:35 schrieb Florian Pritz:
>> > I just noticed sigurd.archlinux.org has a broken rDNS so my mailserver
>> > rejects all mails coming from the AUR.
>>
>> Looks like your mail server is broken. An IP can have several hostnames.
>
> Could you explain what you are using to filter emails? If you really check if
> the ehlo domain/ip is the same as the rdns you might get very few emails. ;-)

He might be referring to FCrDNS which does seem to be broken for
208.92.232.29 as:

a reverse lookup on 208.92.232.29 gives client-208-92-232-29.sevenl.net

but

a lookup of client-208-92-232-29.sevenl.net does not resolve to 208.92.232.29

checked at http://ipadmin.junkemailfilter.com/rdns.php

Not sure if any mailservers are using this but it wouldn't surprise me
if Google was using it. :)

Mike

>
> --
>
> Pierre Schmitz, http://users.archlinux.de/~pierre
>