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You can test your mail on <a href="http://www.mxtoolbox.com" rel="ugc">www.mxtoolbox.com</a> and find any corrections you need to make to your network. 
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You can test your mail on www.mxtoolbox.com [http://www.mxtoolbox.com] and find any corrections you need to make to your network.

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Let me help you...<br />
<br />
what ever connecting IPs you have you should have a PTR Record set up for it...<br />
For PTR Record you need to contact Your ISP and there you need to ask them to create the PTR record for your connecting IP.<br />
<br />
let me know if you want help find your connecting ip....<br />
<br />

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Let me help you...

what ever connecting IPs you have you should have a PTR Record set up for it...
For PTR Record you need to contact Your ISP and there you need to ask them to create the PTR record for your connecting IP.

let me know if you want help find your connecting ip....



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do the following on the command prompt : <br />
<br />
telnet maila.microsoft.com 25<br />
ehlo<br />
<br />
after ehlo you will find one IP address showing up.. That is your connecting ip<br />
you can also go to <a href="http://www.whatismyip.com" rel="ugc">www.whatismyip.com</a>&nbsp;and find it...<br />
<br />
-X
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do the following on the command prompt :

telnet maila.microsoft.com 25
ehlo

after ehlo you will find one IP address showing up.. That is your connecting ip
you can also go to www.whatismyip.com [http://www.whatismyip.com] and find it...

-X

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I am getting a non deliverables from this outside servers. <br />
<br />
The recipient could not be processed because it would violate the security policy in force<br />
&lt;xxxlaw.com #5.7.7 smtp;554 5.7.7 PTR invalid <br />
<br />
I think my problem is this:<br />
<br />
We use Exchange 2003 to send out email which is set up to go out via our Comcast line. &nbsp;However, our incoming email comes in from our Verizon line. &nbsp;There is a ptr record for our Verizon public IP but not one for Comcast which is used by the Exchange to send out. &nbsp;Do I need to set up another pointer record for the Comcast public IP that we send out from? 
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I am getting a non deliverables from this outside servers. 

The recipient could not be processed because it would violate the security policy in force
<xxxlaw.com #5.7.7 smtp;554 5.7.7 PTR invalid 

I think my problem is this:

We use Exchange 2003 to send out email which is set up to go out via our Comcast line.  However, our incoming email comes in from our Verizon line.  There is a ptr record for our Verizon public IP but not one for Comcast which is used by the Exchange to send out.  Do I need to set up another pointer record for the Comcast public IP that we send out from? 

Reverse DNS issue

The term broadband commonly refers to high-speed Internet access that is always on and faster than the traditional dial-up access. Broadband includes several high-speed transmission technologies such as digital subscriber line (DSL), cable, fiber optics, wireless (for which there is a separate topic), satellite and broadband over powerlines (BPL).

Broadband

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.