Support XFINITY Internet Resolve a 554 Error Message


Are you receiving a 554 error message when sending an email to a address? If so, it’s easy to fix. Here’s a bit more about this error message and how you can resolve the issue.

Getting a 554 Error Message

If you’ve received a 554 error message, you’ve been blocked from emailing the Comcast network because your email server is not properly identifying itself when connecting to our servers. This identification process is known as Reverse DNS. Individuals who send spam commonly hide their Reverse DNS to avoid being detected when sending email, which is why these email servers are blocked.

Fixing a 554 Error Message

Comcast is not blocking your email server's IP address. If you’ve received this message, simply contact your email administrator and have your Reverse DNS configured properly.

When contacting the administrator, be sure to include the information from your error message – it will have information that may be needed to resolve the issue.

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