Reverse dns des not reach my IP
Alex Jalali
alex at ubudesign.com
Sat Apr 21 10:57:16 UTC 2007
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:
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> Hash: SHA1
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>
> 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
>
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