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tschgc's profile

Visitor

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3 Messages

Thu, Aug 21, 2014 8:00 AM

Emails sent to comcast.net subscribers are bounced, delayed or NDR'ed

I work for a utility company that sends bills and payment notifications to people with comcast.net email addresses.  I am seeing all of my emails queue up to comcast.net.  I see the emails delay for several hours to several days and have received 2 NDR emails.  This problem is recent as we have not made any changes and this email process worked fine in the past.  I need my emails to get delilvered to comcast.net subscribers as these are billing and payment related messages where the comcast.net customers are also customers of my company.  I see the emails bounce for hours or days before being delivered or getting returned.

Administrator

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1.9K Messages

8 y ago

HI tschgc.  In order to assist, we will need the originating domain, ex: @utilitycompany.com. 

 

Thank You

Visitor

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3 Messages

8 y ago

Hi John,

The domain of the utility company is cngc.com. 

Visitor

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3 Messages

8 y ago

John,

I also wanted to mention that we route our outbound email through Postini.  It appeas to me that Comcast is blocking the IP's from Postini\Google.  I am able to send to Comcast.net email addresses if I do not route my email through Postini. 

Administrator

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1.9K Messages

8 y ago

Hi tschgc.  Third party email routing can trigger spam filtering due to a mismatch between originating domain and senders IP address (reverse DNS look-up failure).  Please send me a private message with a complete bounce back message, including the terminating email address, and I will engage Comcast Security & Abuse to investigate this issue.

 

Thank You