Reverse Lookup .local or .com

Hi,

Where am i suppose to point the revers dns to?

Domain.local or domain.com?

The error i get from mail msg's that fail:

Diagnostic information for administrators:

Generating server: Server.domain.local


mx2.coza.net.za #550 5.7.1 Client host rejected: cannot find your hostname,
[196.26.x.x] ##

Original message headers:

Received: from Server.domain.local ([fe80::a4dc:f918:c5e:5527]) by
Server.domain.local ([fe80::a4dc:f918:c5e:5527%10]) with mapi; Thu, 20 Aug
2009 11:20:22 +0200
From:
To: "''" <''>
Date: Thu, 20 Aug 2009 11:20:22 +0200
Subject: FW: test 21
Thread-Topic: test 21
Thread-Index:
AcofMdqtwti/HeJkQk2JnezUkw+nYwAALmfQAAAY9pAAAYUIkAAAEtzgAAB/KqAAAEu+MAAAF6SQAABIcAAAASr1oAAA8PIwAA74HdAAEYJ4oA A3hxSgAAiylFAAAFJGkAAAhs0AAAAONHAAAf+gQAAjD4wAAAJ0 37AAAgdAIAAAaCYgAACvbwA=
Message-ID: < omain.local>
Accept-Language: en-US, en-ZA
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
acceptlanguage: en-US, en-ZA
Content-Type: multipart/related;
boundary="_006_9CFCE48E838A204D88D67F326F04BDAF334 9F595SVV001dacloc_";
type="multipart/alternative"
MIME-Version: 1.0


Thanks

Hello TheWall,

The reverse lookup zone uses the ip range instead of the zone name. 196.26.x.x

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm


> Hi,
>
> Where am i suppose to point the revers dns to?
>
> Domain.local or domain.com?
>
> The error i get from mail msg's that fail:
>
> Diagnostic information for administrators:
>
> Generating server: Server.domain.local
>
>
> mx2.coza.net.za #550 5.7.1 Client host rejected: cannot find your
> hostname,
> [196.26.x.x] ##
> Original message headers:
>
> Received: from Server.domain.local ([fe80::a4dc:f918:c5e:5527]) by
> Server.domain.local ([fe80::a4dc:f918:c5e:5527%10]) with mapi; Thu, 20
> Aug
> 2009 11:20:22 +0200
> From:
> To: "''" <''>
> Date: Thu, 20 Aug 2009 11:20:22 +0200
> Subject: FW: test 21
> Thread-Topic: test 21
> Thread-Index:
> AcofMdqtwti/HeJkQk2JnezUkw+nYwAALmfQAAAY9pAAAYUIkAAAEtzgAAB/KqAAAEu+MA
> AAF6SQAABIcAAAASr1oAAA8PIwAA74HdAAEYJ4oAA3hxSgAAiy lFAAAFJGkAAAhs0AAAAO
> NHAAAf+gQAAjD4wAAAJ037AAAgdAIAAAaCYgAACvbwA=
> Message-ID:
> < omain.local>
> Accept-Language: en-US, en-ZA
> Content-Language: en-US
> X-MS-Has-Attach: yes
> X-MS-TNEF-Correlator:
> acceptlanguage: en-US, en-ZA
> Content-Type: multipart/related;
> boundary="_006_9CFCE48E838A204D88D67F326F04BDAF334 9F595SVV001dacloc_"
> ;
> type="multipart/alternative"
> MIME-Version: 1.0
> Thanks
>

In the context of mail delivery, you're supposed to point it to the
valid public name used by your SMTP server.

The SMTP Server should use a valid Public Name for outbound SMTP. e.g.
mail.domain.com. Where this is set depends on the mail system, it looks
like Exchange 2007, if that is the case it's set in the Properties for
the Send Connector.

The Public DNS Name for mail server, e.g. mail.domain.com, points to the
public IP Address used by the mail server.

The Public IP Address used by the mail server should have a PTR Record
in a Reverse Lookup Zone pointing back to the public name.

Chris


TheWall wrote:
> Hi,
>
> Where am i suppose to point the revers dns to?
>
> Domain.local or domain.com?
>
> The error i get from mail msg's that fail:
>
> Diagnostic information for administrators:
>
> Generating server: Server.domain.local
>
>
> mx2.coza.net.za #550 5.7.1 Client host rejected: cannot find your hostname,
> [196.26.x.x] ##
>
> Original message headers:
>
> Received: from Server.domain.local ([fe80::a4dc:f918:c5e:5527]) by
> Server.domain.local ([fe80::a4dc:f918:c5e:5527%10]) with mapi; Thu, 20 Aug
> 2009 11:20:22 +0200
> From:
> To: "''" <''>
> Date: Thu, 20 Aug 2009 11:20:22 +0200
> Subject: FW: test 21
> Thread-Topic: test 21
> Thread-Index:
> AcofMdqtwti/HeJkQk2JnezUkw+nYwAALmfQAAAY9pAAAYUIkAAAEtzgAAB/KqAAAEu+MAAAF6SQAABIcAAAASr1oAAA8PIwAA74HdAAEYJ4oA A3hxSgAAiylFAAAFJGkAAAhs0AAAAONHAAAf+gQAAjD4wAAAJ0 37AAAgdAIAAAaCYgAACvbwA=
> Message-ID: < omain.local>
> Accept-Language: en-US, en-ZA
> Content-Language: en-US
> X-MS-Has-Attach: yes
> X-MS-TNEF-Correlator:
> acceptlanguage: en-US, en-ZA
> Content-Type: multipart/related;
> boundary="_006_9CFCE48E838A204D88D67F326F04BDAF334 9F595SVV001dacloc_";
> type="multipart/alternative"
> MIME-Version: 1.0
>
>
> Thanks
>
>
>

Hi Meinolf, so what you are saying is that i must use .domain.local?

In error:
Received: from Server.domain.local

With regards to SMTP you *must* use the public name (.com). But you need
to establish what that is, or make one up first.

Chris

TheWall wrote:
> Hi Meinolf, so what you are saying is that i must use .domain.local?
>
> In error:
> Received: from Server.domain.local
>
>

"TheWall" <> wrote in message
news03A7B7D-55D5-4108-8799-...
> Hi,
>
> Where am i suppose to point the revers dns to?
>
> Domain.local or domain.com?
>
> The error i get from mail msg's that fail:
>
> Diagnostic information for administrators:
>
> Generating server: Server.domain.local
>
>
> mx2.coza.net.za #550 5.7.1 Client host rejected: cannot find your
> hostname,
> [196.26.x.x] ##
>
> Original message headers:
>
> Received: from Server.domain.local ([fe80::a4dc:f918:c5e:5527]) by
> Server.domain.local ([fe80::a4dc:f918:c5e:5527%10]) with mapi; Thu, 20 Aug
> 2009 11:20:22 +0200
> From:
> To: "''" <''>
> Date: Thu, 20 Aug 2009 11:20:22 +0200
> Subject: FW: test 21
> Thread-Topic: test 21
> Thread-Index:
> AcofMdqtwti/HeJkQk2JnezUkw+nYwAALmfQAAAY9pAAAYUIkAAAEtzgAAB/KqAAAEu+MAAAF6SQAABIcAAAASr1oAAA8PIwAA74HdAAEYJ4oA A3hxSgAAiylFAAAFJGkAAAhs0AAAAONHAAAf+gQAAjD4wAAAJ0 37AAAgdAIAAAaCYgAACvbwA=
> Message-ID: < omain.local>
> Accept-Language: en-US, en-ZA
> Content-Language: en-US
> X-MS-Has-Attach: yes
> X-MS-TNEF-Correlator:
> acceptlanguage: en-US, en-ZA
> Content-Type: multipart/related;
> boundary="_006_9CFCE48E838A204D88D67F326F04BDAF334 9F595SVV001dacloc_";
> type="multipart/alternative"
> MIME-Version: 1.0
>
>
> Thanks
>
>
>


From the looks of it, the receiving mail server is doing a check for a
reverse (PTR) entry for your MX record, and one doesn't exist.

You will need to contact your ISP to create a reverse entry for your mail
server. Internally, you will not have control of the external public IP,
since it belongs to your ISP. Call them and ask them to create a PTR entry
called mail.yourdomainname.com (or whatever the public record is), and tell
them you want the PTR associated with 196.26.x.x.

I would also suggest to change the record that shows up in an SMTP telnet
response. Currently it's showing as Server.domain.local, but you want it to
show as mail.yourExternalDomainName.com, (or whatever it's called). In
Exchange 2003, that's done in the ESM, under the Server object, Protocols,
SMTP VS, right-click properties, Deliver Tab, Advanced. Type the name in
there.

If Exchange 2007, it's done in EMC, Server Config, Hub, Transport tab,
Default, properties, as well as in Org, Hub, Transport, internet connector's
properties that you created.

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum to benefit from collaboration
among responding engineers, and to help others benefit from your resolution.

Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer

For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.

Hi, the PTR pointers are now pointing to servername.domain.com.

Still got the error msg. It was done yesterday.

I am on Exchange 2007. Cant find the Connector Connector properties under
Server Config but the internet connectors under Organisation Config there are
2 send connectors. The one i cant change. The source server for it is our old
Exchange 2003 server. Can i delete that connector?

The Send connector for the new server points to servername.domain.com. (Same
as the ptr record)

"TheWall" <> wrote in message
news:E95E574E-7F7E-4160-B07D-...
> Hi, the PTR pointers are now pointing to servername.domain.com.
>
> Still got the error msg. It was done yesterday.
>
> I am on Exchange 2007. Cant find the Connector Connector properties under
> Server Config but the internet connectors under Organisation Config there
> are
> 2 send connectors. The one i cant change. The source server for it is our
> old
> Exchange 2003 server. Can i delete that connector?
>
> The Send connector for the new server points to servername.domain.com.
> (Same
> as the ptr record)


Sorry, I should have been more specific - under the Server Config section,
click on Hub Transport, then properties of the Default connector.

The source server is 2003? If you want the source to be your 2007, you'll
want definitely want to change it to the 2007 server (the connector in the
Org\Hub Transport\Send Connector, your default send connector properties,
Source server.

If you are still getting the message, it could have been from a message that
was sent prior to you changing it. Remember, delivery sending warning is set
at 4 hours, and the message expires in 2 days.

Ace

Ace