If you're having trouble with connecting your email application on your PC or Mac, before you troubleshoot any further, make sure you have the right settings in your mail program.
To configure an email client to use Comcast email (@comcast.net), the following settings should be used for sending and receiving email:
Using POP to retrieve email will cause a less than optimal experience, especially when you use multiple devices to check your email. We strongly recommend IMAP over POP since this will keep your emails in sync across different devices. If you do need to use POP due to any reason, you can use the following connection information:
NOTE: To prevent spam and to ensure the security of our network and customers, Comcast no longer supports the use of port 25 for sending email. If you use an older email client (Outlook Express, Outlook, Mac Mail, etc.), this may impact your ability to send email