Port 25 - Things to know from AT&T
Port 25 Blocked
Port 25 is blocked over AT&T internet. The reasons for this is to provide a more secure internet connection and reducing the amount of spam and viruses that come through Port 25. It is estimated that 80% of the e-mail traffic carried on the network is spam. Spammers have become increasingly sophisticated and go to great lengths to cover their tracks and send countless e-mails flooding your inbox and the internet.
Getting around the Port 25 Block
If you use port 25 to send E-mail, there are a few options to get around this block.
- Configure your mail server to use a different port. Many mail servers no longer use port 25, and it may be best to get the changes made to move away from port 25.
- Have a Business Account? Visit our business forums for support with this issue.
David, AT&T Community Specialist
Need help with an account specific question? Post a new question here on the forums by clicking the "Ask a Question" button.
For additional support, please visit us at our AT&T services hub.