Error: The connection to the server has failed. Account: 'youraccount', Server: 'mail4.gct21.net', Protocol: SMTP, Port: 25, Secure(SSL): No, Socket Error: 10060, Error Number: 0x800CCC0E
1. The Outgoing (SMTP) server requires authentication.
If you are using Outlook Express you should check the box 'My server requires authentication'.
2. If you are behind a firewall, we may be unable to authenticate you.
If you have a personal firewall, try lowering the security or disabling it to see if it is causing the issue.
(Remember to re-enable it after testing)
3. Your SMTP (outgoing mail server) could be blocked.
Here is how to test it:
A. Go to Start -> Run -> type: cmd
B. When the Command prompt appears type: telnet smtp.gct21.net 25
(include the spaces exactly as shown above)
C. Wait a few seconds. You should see the following: '220 mail4.gct21.net ESMTP'. This means that it is not blocked.
D. If you do not see this message, your SMTP is being blocked.