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Monday, August 19th, 2013 7:00 PM


All emails sent from our domain to addresses are being filtered out as SPAM



We are using Exchange Server 2003 and Comcast Business Internet Service, and are unable to send any emails to Comcast recipients. I have added a PTR record, SPF record, as well as setting the exchange server to use external DNS, but that did not fix the problem. As a test I logged into my personal Comcast account settings and completely disabled SPAM filtering, and these messages instantly start coming through. This is not a viable solution though, because we can't ask every client with a Comcast email address to manually change their SPAM settings. The domain name we send from is Is there a way prevent emails from automatically getting marked as SPAM? I have filled out a blacklist removal request, but it says our IP is not blacklisted.  Any help would be greatly appreciated.





1.5K Messages

11 years ago

Hello dlodahl,


Welcome to the forum.

I've forwarded your query to our support team for investigation.


Thank you

New Contributor


1 Message

3 years ago

Was there a solution to this question? I am having the same issue.

Trusted Forum Contributor


51 Messages

Hi, @user_a1f44c. Thanks for reaching out about your email issues. This thread is old and to better help and for system purposes, we would like you to make a new post in our customer service area with details as this thread will be closed/locked. Everything you have done to troubleshoot and any details relevant will help. Please also visit which has helpful topics about what to look for and also a form for blocklist removal. We are looking forward to assisting!

I no longer work for Comcast.