Reverse dns des not reach my IP

[Alex Jalali]

Thanks for the info. I'll see what my ISP can do.

The main reason I wanted to fix this is because I get this very rare error
when sending mail to some servers. I don't know why they reject. Is there a
workaround for this? 


    (reason: 554 <unknown[207.151.156.98]>: Client host rejected: rDNS/DNS
validation failed. Please setup matching DNS and rDNS records:
http://bind8nt.meiway.com/itsaDNSmess.cfm)






-----Original Message-----
From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org] On Behalf
Of Andy Shellam
Sent: Saturday, April 21, 2007 2:48 AM
To: Niall O'Reilly
Cc: Bind-Users Mailing List
Subject: Re: Reverse dns des not reach my IP

"Probably not if OP expects to need to do updates from time to time. "

But, if their ISP has to refuse (if the OP doesn't own the entire /24 
block) then he's got no choice, or he'll be stuck with the standard 
server-x.x.x.x.isp.com format, so it's better than nothing?

Andy.


Niall O'Reilly wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
>
> On 21 Apr 2007, at 10:16, Andy Shellam wrote:
>
>> 1. ask your ISP to change the reverse DNS for your IP to the domain you
>> require
>
>> 2. ask them to delegate 123.123.123.in-addr.arpa to your DNS servers
>> (which unless you own the entire 123.123.123.x range, it's unlikely
>> they'll do.)
>
>     "Unlikely" is an understatement!  8-)
>
>     If they know what they're at, they have to refuse unless OP
>     owns the entire /24 block, due to likely impact on other
>     "residents" in the block.
>
>> I'm not sure if you can delegate a single record.
>
>     You can.  See RFC2317.
>
>> Option 1 is by far the easiest.
>
>     Probably not if OP expects to need to do updates from time to time.
>
>
>     Best regards,
>
>     Niall O'Reilly
>     University College Dublin IT Services
>
>     PGP key ID: AE995ED9 (see www.pgp.net)
>     Fingerprint: 23DC C6DE 8874 2432 2BE0 3905 7987 E48D AE99 5ED9
>
>
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