Do I have to change my POP3 server or POP3 username / password?

No - POP3 (Post Office Protocol) is for your incoming mail only.

AuthSMTP only handles your outgoing mail - so you should not change your POP3 server, POP3 username or POP3 password.

For more details on setting up the AuthSMTP SMTP mail relay service see our software setup guides or our support knowledge base.

If you have any questions please contact us.