Try using G Mail for SMTP server. Google G Mail as SMTP server, you will get lots of info.
yon use ports other than 25. Use the test in the Maint tool to test your settings.


Incoming Mail (POP3) Server - requires SSL: your.isps.pop3.server.com
Use SSL: No
Port: 110
Outgoing Mail (SMTP) Server - requires TLS: smtp.gmail.com (use authentication)
Use Authentication: Yes
Use STARTTLS: Yes (some clients call this SSL)
Port: 465 or 587
Account Name: your Gmail username (including '@gmail.com')
Email Address: your original isp address ([email protected])
Password: your Gmail password