Comcast business accounts have been blocking many ports (including 25). This has been ongoing and happening throughout the country primarily to prevent spamming. It also blocks external communication from devices above IP addresses .199. As far as Outgoing scanning to email (SMTP) is concerned, Port 587 or 465 with SSL seems to work in many cases. Be sure to enter appropriate Authentication credentials (valid username/password). If you are still having trouble with this, please contact Comcast to determine which set of settings will work with your imager for Outgoing SMTP.
Introduction 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. To learn more about port 25, please visit our FAQ.
To configure an email client to use Comcast email (@comcast.net), the following settings should be used for sending and receiving email:
| Recommended
| Only If Needed |
| Incoming Mail Server - Name | mail.comcast.net | mail.comcast.net |
| Incoming Mail Server - Port Number | 995 (POP3) | 110 (POP3) |
| Outgoing Mail Server - Name | smtp.comcast.net | smtp.comcast.net |
| Outgoing Mail Server - Port Number | 465 (SMTP) | 587 (SMTP) |
| SSL Encryption | checked | unchecked |
| Authentication | Comcast ID and Password required |