How to Set Up Your Comcast Outgoing SMTP E-Mail Send Server

This has caused me countless headaches in the past, now I’m hoping you don’t have to go through the same! Here’s my guide to successfully install Mozilla Thunderbird version 3 if you are using Comcast as your Internet Service Provider (ISP) and using the Comcast cable modem.

Maybe you have your own domain name that you’d like to send email with as the From: address (like yourname@yourdomain.com) but Comcast is giving you issues by getting stuck on Connecting to smtp.comcast.net… or just a screen saying Sending mail… but it never sends. Here’s how to do it:

  1. Open Mozilla Thunderbird.
  2. Click Tools in the menu bar
  3. Click Account Settings
  4. Scroll down to Outgoing Server (SMTP). Click Add.
  5. In Server Name write: smtp.comcast.net
  6. In Port write 587
  7. In the Security and Authentication section, put a checkmark on Use name and password and type your comcast.net email address in User Name (example: myname0019@comcast.net)
  8. Do not put a checkmark in Use Secure Authentication
  9. In Connection security choose None
  10. Click OK
  11. Find your email account in the list in that same window (example: yourname@yourdomain.com). Click the name you’ve chosen for it (example: My Email or yourname@yourdomain.com).
  12. In Outgoing Server (SMTP) choose your newly created SMTP outgoing server email address that we just created in the previous steps.
  13. Start sending emails.
Topic: Technology
Tags: ,
January 18, 2010
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