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Wait. DNS entries take time to propagate all around the world.
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Wait. DNS entries take time to propagate all around the world.

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Not a waiting game as we did this about a week ago. I am looking a little more closely and it appears my request was pointing to the wrong server name. Making the corrections now.
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Not a waiting game as we did this about a week ago. I am looking a little more closely and it appears my request was pointing to the wrong server name. Making the corrections now.

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Ah, information that could have been helpful earlier. Good luck.
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Ah, information that could have been helpful earlier. Good luck.

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I have a client that we need to email that is in Slovenia. When we attempt to send them an email we get a bounce back saying our email was not delivered due to security policies with mailhub.siol.net reporting: <br />
<br />
&quot;Recipient address rejected: Blocked - Your IP [XX.XXX.XXX.XXX] has no corresponding reverse (PTR) address. Ask your Internet Service Provider to assign you IP with valid reverse (PTR) record. ##&quot;<br />
<br />
I use Comcast as my ISP and have asked for a Reverse PTR record. I have gone to DNSStuff and executed a Reverse PTR check and it has come back that this IP Address points to my server of Mail.domain.com<br />
<br />
Any thoughts on what to try next?
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I have a client that we need to email that is in Slovenia. When we attempt to send them an email we get a bounce back saying our email was not delivered due to security policies with mailhub.siol.net reporting: 

"Recipient address rejected: Blocked - Your IP [XX.XXX.XXX.XXX] has no corresponding reverse (PTR) address. Ask your Internet Service Provider to assign you IP with valid reverse (PTR) record. ##"

I use Comcast as my ISP and have asked for a Reverse PTR record. I have gone to DNSStuff and executed a Reverse PTR check and it has come back that this IP Address points to my server of Mail.domain.com

Any thoughts on what to try next?

Reverse PTR Record

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.