Visitor
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3 Messages
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.
CC_John
Retired Employee
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1.9K Messages
10 years ago
HI tschgc. In order to assist, we will need the originating domain, ex: @utilitycompany.com.
Thank You
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tschgc
Visitor
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3 Messages
10 years ago
Hi John,
The domain of the utility company is cngc.com.
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tschgc
Visitor
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3 Messages
10 years 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.
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CC_John
Retired Employee
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1.9K Messages
10 years 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
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