Non Delivery Report

@Annabelle2 

I've been getting several "Non Delivery" emails in the past few days, at least four every few minutes, regarding a phishing email I forwarded to Comcast's "Abuse" email address on 5/28/2026 at 6:15 AM. When I forwarded this email I got from some hotmail address claiming to be someone from Xfinity, with "XFINlTY" in the mail text. Do the Comcast Customer Security Assurance Team members no longer accept reports of phishing email at this address? 😕

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.

This is probably why you're getting the "Non Delivery" emails.  

https://spa.xfinity.com/help/email-abuse?faq=report-spam-email 

Read under Email Abuse.

The error seems to be one of those 451-451 4.2.0 (followed by letters and numbers) "Policy Violation, please try again later." errors. I have a feeling it has to do with the SMTP server. Do I need to, (gulp) switch Internet Service Providers?

Annabelle2 We absolutely still accept phishing reports. 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.

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. Send the spam message as an attachment to missed-spam@comcast.net.

@XfinityTommy Here's a Non Delivery report that I just got. I forwarded it to the Comcast Customer Security Assurance email, abuse(at)comcast(dot)net, not as an attachment, but with the following inside the body of the email. Please tell me if this looks right to you.

[Edited: "Personal Information"]

Customer Security Assurance
Business Hours: 8:00am - 12:00am EST, 7 days a week  
Contact: 1-888-565-4329 

Giving you the business hours.