LiveChat
Support
Blog
Affiliates
First try restarting your computer. If the error persists try removing the mail account from your mail client, close it, and re-add it.
Email Configuration Tutorials
You will also want to make sure your Internet Service Provider is not blocking port 25 access outside their own service. By opening a shell/command prompt and typing "telnet mail.yourdomain.com 25" you should be able to reach it. If not, your ISP or software you have installed is blocking your access.
Now as an available option you may use port 50 as an alternative port for sending mail via SMTP.
- 535 Users Found This Useful
Related Articles
Why aren't my sent emails showing up in my sent folder?
Often when we setup our iPhones and iPads we do not complete the process to truely map the phone...
How do I change the mx records?
Simply go into your control panel with Ultra, click Zone Editor, then click "Manage". The MX...
How may I create a mailing list?
Login to the control panel. Locate the icon "Mailing Lists" within the "Mail" section....
cPanel and Outlook Phone App Results in Unable to Log In - Secure Connection Unavailable
It appears the free Outlook app for iOS and Android phone does not support newer SNI based...
Outlook: Error Message: A Connection Failure Has Occurred (Error -23012)
When you try to send and receive messages by using Outlook Express, you are able to send...
