NO PTR Record Help !!

[Henry Lee]

Hi , all
We host our own email server in house.
The server can not email to particular mail server because of reserve PTR
record.
the error message is
" You do not have permission to send to this recipient. For assistance,
contact your system administrator.
<dellserver.xxxx.com #5.7.1 smtp;554 5.7.1 The server sending your mail
[12.28.xx.xx] does not have a reverse DNS entry. Connection Rejected. Please
contact your Dial-Up/DSL/Network ISP Provider. Default Reject!> "

So I tend to my DNS hosting Interland.com for help.
And they told me I need to set up PTR record on my end for my own mail
server.
It is not their problem.
I checked our DNS server , there is a reverse lookup zones includes all our
workstation reverse lookup.
So what can I do right now ?
I am running out all ideas.
Please help
Thanks,
Henry

 

[Kevin D. Goodknecht [MVP]]

In

Hi , all
We host our own email server in house.
The server can not email to particular mail server because of
reserve PTR record.
the error message is
" You do not have permission to send to this recipient. For
assistance, contact your system administrator.
<dellserver.xxxx.com #5.7.1 smtp;554 5.7.1 The server sending your
mail [12.28.xx.xx] does not have a reverse DNS entry. Connection
Rejected. Please contact your Dial-Up/DSL/Network ISP Provider.
Default Reject!> "

So I tend to my DNS hosting Interland.com for help.
And they told me I need to set up PTR record on my end for my own mail
server.
It is not their problem.
I checked our DNS server , there is a reverse lookup zones includes
all our workstation reverse lookup.
So what can I do right now ?
I am running out all ideas.
Please help
Thanks,
Henry

My guess is that your ISP still has Authority over the Reverse lookup for
your IP.
I can't tell you without knowing the IP but there is a tool at
www.dnsstuff.com that will check the reverse lookup and tell you who has
Authority.

 

[Henry Lee]

Hi,
Thanks for your help .
This is the report from DNSSTUFF.COM
It looks like I should talk to Interland.net , but it is pretty frustrated
to talk to them cause they always said they can not create PTR record from
their end.
And neither point PTR record request to our DNS website.
Any thought ?
Henry


"Preparation:
The reverse DNS entry for an IP is found by reversing the IP, adding it to
"in-addr.arpa", and looking up the PTR record.
So, the reverse DNS entry for 12.28.XX.70 is found by looking up the PTR
record for
70.XX.28.12.in-addr.arpa.
All DNS requests start by asking the root servers, and they let us know what
to do next.
See How Reverse DNS Lookups Work for more information.

How I am searching:
Asking a.root-servers.net for 70.XX.28.12.in-addr.arpa PTR record:
a.root-servers.net says to go to dbru.br.ns.els-gms.att.net. (zone:
12.in-addr.arpa.)
Asking dbru.br.ns.els-gms.att.net. for 70.XX.28.12.in-addr.arpa PTR record:
Got CNAME referral to a.ns.interland.net. (zone
70.64-26.XX.28.12.in-addr.arpa.)
Asking a.ns.interland.net. for 70.64-26.XX.28.12.in-addr.arpa. PTR record:
Reports that no PTR records exist.

Answer:
No PTR records exist for 12.28.XX.70. [Neg TTL=86400 seconds]

Details:
a.ns.interland.net. (an authoritative nameserver for XX.28.12.in-addr.arpa.,
which is in charge of the reverse DNS for 12.28.XX.70)
says that there are no PTR records for 12.28.XX.70.

To get reverse DNS set up for 12.28.XX.70, you need to speak to your
Internet provider. You could also
check with [email protected]., who is in charge of the
XX.28.12.in-addr.arpa. zone.

Note that all Internet accessible hosts are expected to have a reverse DNS
entry (per RFC1912 2.1),
and many mailservers (such as AOL) will likely block E-mail from mailservers
with no reverse DNS entry.
To see the reverse DNS traversal, to make sure that all DNS servers are
reporting the correct results, you can Click Here.
"

In

Hi , all
We host our own email server in house.
The server can not email to particular mail server because of
reserve PTR record.
the error message is
" You do not have permission to send to this recipient. For
assistance, contact your system administrator.
<dellserver.xxxx.com #5.7.1 smtp;554 5.7.1 The server sending your
mail [12.28.xx.xx] does not have a reverse DNS entry. Connection
Rejected. Please contact your Dial-Up/DSL/Network ISP Provider.
Default Reject!> "

So I tend to my DNS hosting Interland.com for help.
And they told me I need to set up PTR record on my end for my own mail
server.
It is not their problem.
I checked our DNS server , there is a reverse lookup zones includes
all our workstation reverse lookup.
So what can I do right now ?
I am running out all ideas.
Please help
Thanks,
Henry

My guess is that your ISP still has Authority over the Reverse lookup for
your IP.
I can't tell you without knowing the IP but there is a tool at
www.dnsstuff.com that will check the reverse lookup and tell you who has
Authority.

 

[Kevin D. Goodknecht [MVP]]

In

Hi,
Thanks for your help .
This is the report from DNSSTUFF.COM
It looks like I should talk to Interland.net , but it is pretty
frustrated to talk to them cause they always said they can not create
PTR record from their end.

Who is Authoritative for the Forward Lookup Zone?
Have the reverse lookup delegated to that DNS server. If you are
Authoritative for the Forward Lookup Zone, have it delegated to you. Then
just create a Reverse lookup zone using the name they delegate it to you as.
Then create your own PTR.
I can't tell you as of yet the name of the zone to use because there is no
strict RFC for it, but once the delegation is done I can tell you.

 

[Larry Stotler]

Hello,

Some email servers can require that the IP address sending the mail must
resolve back to the external name of your mail server. This is a security
check to make sure that the mail is coming from the server it says it is
coming from. Who ever owns the 12.28.xx.xx IP range is responsible for the
PTR record. If this is the ISP they will need to create teh record for you
or delegate it to your DNS server.

If you do an NSlookup to x.x.28.12.in-addr.arpa, what DNS server responds?


Larry Stotler, MCSE
Microsoft Product Support

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