My email are being rejected at some location.

I am using exchange 2007, and my mx record are located in
when  my user sent out email some of the meails get rejected, I called my isp to see if they had something to do with it, and they said no because they are not hosting the dns for the company. To call GoDaddy. I called today and they told to configure the dns section under my domain, but they could not give me instruction on how to do it. Can someone send me step by step instructions on how to configure the ptr record for my domain to point to my exchange server so the emails won't get rejected?

This is a example of an email of one of my user
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The following organization rejected your message:

Generating server: PRESSRV.prescafe.local #501 5.7.1 <>... Sender IP must resolve ##

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You have to call your ISP and ask them to add a PTR record for your MX to your public IP

I dont think you need to change anything @ godaddy

How to find MX
Go here
enter your domain name

it will list out your MX and the IP

Call your ISP - give them your IP and give them your MX - and ask them to set a PTR record.

papichulodr69Author Commented:
I did that and they told me that they had nothing to do with the dns
papichulodr69Author Commented:
they sent me these email

Attn:  Ricardo
Reverse ip address range of:
has been delegated to the name servers of:

Following is an example of how a partial c class should be set up. You should substitute your own IP block for the one used in the example below.
0/     3600    SOA
                        1999091702      ; serial
                        3600    ; refresh (1 hour)
                        600     ; retry (10 mins)
                        expire  = 600000 (6 days 22 hours 40 mins)
                        86400 )  ; minimum (1 day)
0/     3600    NS
1   3600    PTR
10  3600    PTR
11  3600    PTR
12  3600    PTR
13  3600    PTR
0/     3600    SOA
                        1999091702      ; serial
                        3600    ; refresh (1 hour)
                        600     ; retry (10 mins)
                        86400   ; expire (1 day)
                        3600 )  ; minimum (1 hour)
It is a common misconception that the owner of the IP block has to create the PTR records or only the owners of the IP address can add the PTR record, but that is not the case.
Please refer to:
RFC 2317 for more information on IP delegations.
If AT&T is going to takeover your Reverse DNS we must provide primary DNS for at least 1 domain name that your company owns. Below is information explaining our policies and procedures if you desire to have AT&T maintain your DNS records.
Find below a listing of criteria that needs to be met for AT&T Worldnet MIS to provide reverse look-up services:
(1) IP block must be assigned by AT&T (Please note that just having an IP block and no forward domain is not sufficient)
(2) If a customer owns their own IP block it must be delegated to our name servers.
(3) If a customer has a IP block from another ISP it must be delegated to our name servers.
(4) At least one forward domain must be hosted on our servers for all three of the conditions listed above.
(5) The one forward domain must not be a lame delegation* but must contain valid working DNS records and not be a "dead" zone.
(6) The domain we host must be owned by your Company as evidenced by the Registrant information shown when doing a WHOIS look-up.
AT&T will host up to 15 domain names at no extra charge for each MIS Circuit your company has with AT&T. Please provide us with a list of the host domains with associated IP records.
All domain names must be owned by the customer. The registrant information found in the WHOIS lookup at Network Solutions is what we use to determine ownership.
Once we have added the request to our nameservers, we will send an email response to you confirming we have added the domain name and give you the nameserver information so that changes can be made with the registrar of your choice for your domain name.
Dragon Account #  77121
Thank You,
AT&T DNS Tech Team
888-613-6330 Prompts, 3 & 1

From: Ricardo Blanco []
Sent: Thursday, August 12, 2010 10:12 AM
To: DNS Services, MIS Lifecycle; Jose Garcia
Subject: Please set this PTR


 Please  create a PTR/Reverse DNS for the following:

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Rich WeisslerProfessional Troublemaker^h^h^h^h^hshooterCommented:
If it isn't your ISP, it may be an upstream ISP that handles DNS for them.  GoDaddy won't be authoritative for the reverse lookup... it'll have to be whoever controls the IP address range in which your mail server resides.
papichulodr69Author Commented:
The isp tells me I need to transfer the dns to them, so they can creat the ptr record. How can I find out where my dns is located?
Rich WeisslerProfessional Troublemaker^h^h^h^h^hshooterCommented:
Wow!  They already delegated the reverse lookup?
If the statement at the top there is accurate, and I'm reading this correctly: would be authoritative for the reverse lookup.  Apparently that IS -- so I take back the part where I said godaddy won't be authoritative.  You should have GoDaddy make the PTR entry as sunnyc7 specified.
papichulodr69Author Commented:
whe i call godaddy i need to tell them to make the ptr entry as sunnyc7
Give me 10 mins. I am testing something with your MX
papichulodr69Author Commented:
ok thanks
Here's your MX
Pref      Hostname      IP Address      TTL            
0      30 min      SMTP Test      Blacklist Check
10      30 min      SMTP Test      Blacklist Check
30      12 hrs      SMTP Test      Blacklist Check

Your public IP of your router/firewall should be >>
from your network - go to

Check if that's the same as

your original request was for

>> you need to call them to set a PTR record for this      

Call you verify your public IP and call them again.

I mean - verify if your public IP is - and call ATT again.
papichulodr69Author Commented:
can i change that ip to
When you go to -

What is your public IP ?
Is it

12.174 ?
papichulodr69Author Commented:
Then you need to delete the first record from your Godaddy DNS -

Check the guide over there to edit DNS records.
papichulodr69Author Commented:
i sould put the ip address that goe to the fire wall
i so sorry for all the question
if you go to
and the IP address is >

That is the IP address on your firewall.

If you are planning to use the IP address as your MX >

Then you need to delete the first mx record >

Are you receiving emails ?
I wonder how that will work since your MX is pointing somewhere else ? Email servers will deliver emails to the First MX
papichulodr69Author Commented:
with the configuration it had yes i did received  email
i change the this ip looks like my dsl ip we have T1
papichulodr69Author Commented:
i sent another email to test and in get this error

Generating server: PRESSRV.prescafe.local #501 5.7.1 <>... Sender IP must resolve ##

Original message headers:

The issue here is that AT$T WILL NOT create a PTR (Reverse DNS) for an IP if they are not hosting the DNS.  They will delegate it to the DNS servers of your choosing.  When I run in to this, I usually use  It's free and reliable.  After creating the zone for your IP, have AT$T delegate the reverse DNS to the DNS server supplied to you by zoneedit and create your PTR.
more detail pulled from another EE post:
I used zoneedit to create RDNS records for my IP address block and it worked great.  It was just a pain to get it setup.  
We created a record in ZoneEdit.  The IP block has to be formatted as such: XX.XXX.XXX.XXX-XX where the -XX represents the subnet masks /29 for example.  After ZoneEdit assigned us name servers we had to send a request back to ATT (our T1 provider).  The email basically told ATT to change the nameservers for our IP block.
"We are requesting a change for reverse DNS zone delegation.
Please change the DNS servers for DSE IP block XX.XXX.XXX.XXX-XX on Circuit ID DHEC-XXXXXX to:"

This is the help section for RDNS on ZoneEdit's website
How do I set up reverse DNS?
If you have an entire class C netblock, and your ISP will delegate reverse DNS to zoneedit, then you can do the following:
First, you need to add the ARPA zone to the zoneedit system (example:
Then you need to tell your ISP (or ARIN) to delegate control over that zone to the nameservers assigned to you
For these sorts of zones, there's no need to add A records, only PTR records are needed.
Example of a PTR: IN PTR 
We also can support CNAMEs to serve PTR records from our servers, so you can control less than a whole netblock
You should not delegate a single IP address using NS records. This may work, but it will be unreliable.
Reverse DNS is hard, especially because of the preponderance of virtual web servers. 9 times out of 10, you should simply get your ISP to set up a reverse DNS record for you, rather than trying to get a CNAME or an NS delegation.
Reverse DNS is not required for the correct operation of web servers and most other internet systems.

Hope this helps

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The easiest way to solve you problem is to change your DNS hosting to AT&T.  Then, they will create the PTR for you.  Find out from AT$T what the name servers are, the log in to your godaddy account and change the nameservers to the ones assigned by AT&T.  Make sure you take note of your existing records in case AT$T doesn't do a proper zone transfer.
B HCommented:
sorry, i'm jumping in here after reading the first 10 comments or so.

send the request to your ISP again but DONT mention "PTR" that's going to confuse the heck out of them.  they can't create PTR records for you, but ONLY THEY can create reverse dns entries for THEIR ip address they're leasing to you.  godaddy has nothing to do with it.

"Please create us a reverse dns entry (rDNS) such that reverses to [whatever your smtp banner is, like]"

this is 50% incompetence on their part, and 50% them trying to steal your dns hosting so they can charge you $20/month

i'd try all 3 of these people:
AT&T WorldNet Services ATT - (probably wont care)
GIROSKI OPERATING - (probably you)
AT&T WorldNet Services - (these guys are the best bet)

the bottom att contact info is:
OrgTechHandle: IPSWI-ARIN
OrgTechName:   IP SWIP
OrgTechPhone:  +1-888-613-6330

OrgTechHandle: ICC-ARIN
OrgTechName:   IP Team
OrgTechPhone:  +1-732-844-5564

if they give you any grief, remind them that you're a paying customer and if they want to to continue as such, they need to make the rdns entry.

when someone looks up an rdns entry, they can only go to the owner of the ip, in this case ATT.  there is no function for them to look up an rdns entry at godaddy or any other random dns provider

I'm sorry Byron, but you are mostly wrong.
1) PTR is the correct term.  
2) Also, it can be done on another DNS service, as long as you are able to create a zone. This is done by delegating the DNS for the IP address/subnet do another DNS server with a properly configured zone and PTR.
3) And, lastly, AT$T WILL NOT create a reverse DNS PTR UNLESS they host your DNS.  They do not charge a fee for the first domain DNS hosting, but I believe they do for additional domains.
PTR may be the correct term, but I understand what Byron is saying concerning this.  Some of the "tech" people that are working the phones seem to be working off a computer screen with little real world knowledge.  If their screen doesn't say PTR, they seem to don't know what you are talking about.

Most do understand "Reverse DNS Lookup" so I recommend at least mentioning that term so they can figure out what you want from them.

My 2¢ worth.
You can setup your PTR records in if you are using their name servers.  Here is how:

Login into your GoDaddy account, Navigate to the Domain Manager.
Double click on the domain in question to show details & manage
Underneath the DNS information there is a link called "Total DNS Control".  Click that.
Scroll down to the row that begins with TXT
On the right side of that row there is a button that says "Add New SPF Record".  Click that.
There will be an SPF Wizard, click the raidio button that applies (leave default if unknown) & click OK.
The 3rd Tab on the next window says PTR.  Click on that  to setup your PTR Records.

Write down their support number from the login page and if you have questions, call them & they will help walk you through it.

Good Luck
Let us know how it goes.

Rich WeisslerProfessional Troublemaker^h^h^h^h^hshooterCommented:
Don't know if that'll give you any issues.. if it does, you'll likely need to build the SOA record for the "32/" domain.  (It might be that the web based wizard is smart enough to do that part on it's own... that's what most of the message you received from AT&T concerned...
papichulodr69Author Commented:
I called att and they tranferd the DNS
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