BT reverse ptr records

Barry Margolin barmar at
Tue Jun 14 00:32:33 UTC 2005

In article <d8kfmq$e0p$1 at>, "C" <c at> wrote:

> Hi
> hope this is the best group to post this in
> i have just moved over our office to BT from easynet
> with easynet we had our dns setup so we could run a mail server from the 
> office.   the domain had a sub domain '' and easynet setup a 
> reverse record for this as well
> since moving to BT we have the same setup internally, however BT will not 
> change their reverse dns ptr/in-addr records to match our domain and i am 

They should probably delegate the reverse DNS for your whole subnet to 
your DNS servers.

> worried that this will lead to mail being returned because the reverse lookup 
> does not match the domain it comes from 
> is this true and if so how can i get round this

Yes, it's true.  I think BT is being ridiculous.  I can't believe that 
an enterprise Internet connection would not include reverse DNS 

Barry Margolin, barmar at
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***

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