I see to be having a problem with POP before SMTP on my server. I'm running the latest version of Directadmin on Debian 3. I just set this server up so it may not have ever worked. I thought it was turned on by default, but I could be wrong.
When I try to send a message I receive the following error:
"The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '[email protected]'. Subject 'test', Account: 'mail.domain.com', Server: 'mail.domain.com', Protocol: SMTP, Server Response: '550 authentication required', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79"
When I try to send a message I receive the following error:
"The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '[email protected]'. Subject 'test', Account: 'mail.domain.com', Server: 'mail.domain.com', Protocol: SMTP, Server Response: '550 authentication required', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79"