Report Abuse

When reporting spam emails, it is critical that you send us the email headers. Please do not forward the spam email. Forwarding the email will remove the original headers.

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Report a spam email sent to your Comcast.net email account

Webmail Users

1. Select the message you wish to report as spam.
2. Click the "Spam" button in the right-hand corner of the webmail console.

Email Client Users (Windows Mail, Outlook, Thunderbird, etc.)

1. Select the message you wish to report as spam.
2. Forward the spam message as an attachment to missed-spam@comcast.net.

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Report spam email sent from within the Comcast Network

Once you have copied the full message headers from the spam message, paste the header and message into an email and send it to abuse@comcast.net.

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How to unblock an email address

If an email is unable to be delivered to a Comcast.net email address, it's possible the sender's email provider is blocking your address as an antispam precaution for Xfinity customers.

The sender should receive an error message containing a link to a FAQ with valuable information regarding the issue and steps necessary to request removal.

Email administrators can submit the blocked IP address to the Security Assurance department to determine if the IP address is eligible for removal by completing the Blocked Provider Request Form. Requests submitted through this form are reviewed on a 24x7 basis.

Click here for a detailed list of error messages and associated FAQs

When reporting phishing emails, it is critical that you send us the email headers. Please do not forward the phishing email. Forwarding the email will remove the original headers.

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Report phishing email sent to or from a Comcast.net email account

Once you have copied the full message headers from the spam message, paste the header and the message into an email and send it to abuse@comcast.net with the subject line "Phishing email."

You can help protect your email accounts from hackers and other threats.

Did you know hackers can use your computer to send spam without your knowledge? You can help deter hackers and ensure your email is delivered by following the steps outlined below.

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Mail Client Users

Outlook, Windows Mail, MacMail, etc.

To help protect your computer, please visit our Xfinity Connect help page for instructions on how to securely configure your email client program. In accordance with industry recommendations, Comcast recommends the sending of email on port 587 with authentication or port 465 with authentication over SSL as secure alternates to port 25, which is the default for many older email clients. If you are configured to use a server other than smtp.comcast.net, please contact your mail provider for alternate secure port settings.

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Webmail Users

Comcast.net, Gmail.com, Outlook.com, etc.

If you are a webmail user and use a browser to access your email, you don't need to do anything.

Firewall logs should be sent to the Internet Service Provider who controls the network associated with the IP address attempting to connect to your computer.

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If the IP address resides on the Comcast network

• Cut and paste the firewall logs (including the offending Comcast IP address) into an email and send it to abuse@comcast.net. Include the words "Firewall Investigation" in the subject line.
• Do not send the firewall logs as an attachment. Emails sent with an attachment cannot be processed.

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If the IP address does not reside on the Comcast network

• Send the firewall logs to the abuse email address of the Internet Service Provider responsible for the IP address.
• If you need help determining the Internet Service Provider responsible for the IP address in question, visit www.arin.net. Entering the IP address will return the information of the responsible party.

In the unfortunate event that your identity has been stolen and/or fraudulently used to acquire Comcast services, or in some other way been utilized on a Comcast account, you can initiate a claim process.

If you think a website has been blocked due to xFi Advanced Security, you can report the issue to Customer Security Assurance.