On Wednesday, September 21, 2005, 08:09:14, Adam Campbell wrote:
> This and two other messages from this forum were sent to my spam folder 
> via rules.  This has happened a few times before.
>
> Here's the log clip:
>  ...  FAILED   reverse DNS validation for address (156.21.1.21)
>  ...
> Has anyone else seen this,

Yes.

>  or is this an issue with my DNS server?

No, its an issue with the delegation of Ipswitch's IP address.

The 156.in-addr.arpa. parent servers all report the following
21.156.in-addr.arpa. parent servers:
   auth01.ns.harvard.net.
   auth02.ns.harvard.net.
   hub.ipswitch.com.

hub.ipswitch.com reports that 156.21.1.2 reverses to list.ipswitch.com.

auth01.ns.harvard.net. and auth02.ns.harvard.net. reports that there is
no PTR record for that IP address.

So its a crap shoot depending on which 21.156.in-addr.arpa. parent
server is queried.

-- 
[EMAIL PROTECTED]     "The avalanche has already started, it is too
Rod Dorman              late for the pebbles to vote." – Ambassador Kosh


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