E-mail Notification for monitoring

Hello Experts,

We have a requirement to enable BO monitoring and gets the e mail of the alerts.

I have studied the SAP Note and blogs but one thing is not clear to me how BO application machine and server authenticated when some message is send to the SMTP server.

First i have to make a connection to the SMTP server. For that i just need to ask SMTP server name and the port that it is listening to usally 25 ryt?

Then in monitoring i configure the email address and in Watchlist i have to enable the notification. Where else i have to make entry for it?

Regads,

Mohit