Can't send emails to AOL

SNUEngineer
SNUEngineer used Ask the Experts™
on
I recently setup Exchange 2010 and for the most part it seems to be working fine. One issue I am having though is when sending emails to AOL. After researching online some people with this issue experience this problem because they haven't setup PTR records with their ISP. I have already set that up and it checks out fine.

What else could cause this?
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
What issue are you having?

Are you getting bounces when you send to AOL?

Are only some messages getting through?

Are you just getting an error on the server?

Author

Commented:
the messages are stuck in the Exchange queue with 400.4.4.7 message delayed.
You're not spamming or mass mailing, are you?

In my experience, AOL and Hotmail are the most agressive hosts when it comes to blocking legitimate, opt-in email messages, and getting the block removed is an onerous and tedious process.
Exploring SharePoint 2016

Explore SharePoint 2016, the web-based, collaborative platform that integrates with Microsoft Office to provide intranets, secure document management, and collaboration so you can develop your online and offline capabilities.

Author

Commented:
If we were spamming then I would understand why our emails are not going through. Also no mass mailing. Since Exchange has been setup we've probably sent a total of about 40-50 emails.
Director
Commented:
I have had similar problems with AOL. It seems that they mistakenly identified our IP address as a dynamic IP, although we do have a static address. If you check the FAQ at AOL there is a procedure to get yourself removed from the block list.

Author

Commented:
I've been looking at the AOL's postmaster website but we don't really receive a  bounce back message from AOL. I filled out a misc support request form so we will see I guess.
Keith MooreDirector

Commented:
I don't think we had a bounced email message, however the information was in the AOL server response in the 'SMTP out' logs. Resend an email to a valid AOL address and check the logs for information.

Author

Commented:
AOL finally got back to me and it turns out that they were blocking our IP because they thought it was dynamic. Anyway its resolved now.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial