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March 25, 2025

May 13, 2026 3:31 pm

Resolving comcast email delivery issues in Salesforce Marketing Cloud

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Understanding the Issue

To diagnose the issue, we recommend querying the _Bounce data view to look at the specific bounce codes for the Comcast addresses. This will provide insight into what is causing the delivery issues.

Another potential cause of the issue is rate limiting. To check if this is the case, we suggest checking the error message to see the error code. Additionally, the Comcast postmaster page provides information on common email errors and how to resolve them.

The root cause of Comcast email delivery issues in SFMC is often related to IP reputation or authentication problems with the sending domain. To resolve the issue, it is essential to investigate and address the underlying cause.

Resolving the Issue

To resolve the issue, we recommend the following steps:

SFMC Query Example

SELECT * FROM _Bounce WHERE Domain = 'comcast.net'

This query will provide insight into the bounce codes for the Comcast addresses and help identify the root cause of the issue.

Heads up: It is essential to monitor email delivery issues and address them promptly to prevent damage to the IP reputation.

Checklist for Resolving Comcast Email Delivery Issues

Checklist

  • Query the _Bounce data view to look at the specific bounce codes for the Comcast addresses
  • Check the error message to see the error code
  • Verify the IP reputation of the client instance
  • Verify the authentication with the sending domain
  • Monitor email delivery issues and address them promptly
  • Check the Comcast postmaster page for information on common email errors and how to resolve them

What is the first step in resolving Comcast email delivery issues in SFMC?

The first step is to query the _Bounce data view to look at the specific bounce codes for the Comcast addresses.

What is the potential cause of Comcast email delivery issues in SFMC?

The potential cause of the issue is IP reputation or authentication problems with the sending domain, or rate limiting.

How can I check the error code for the email delivery issue?

You can check the error message to see the error code.

What is the importance of monitoring email delivery issues in SFMC?

Monitoring email delivery issues is essential to prevent damage to the IP reputation and ensure successful email delivery.

Genetrix Technology · Salesforce Marketing Cloud Partner

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