Setting up SMTP to use GP-Approval Form in CAF

Dear All,

I am trying to setup my SMTP mail in WAS7.0 SP4, my motto is to use this setting to send mail out from CAF GP (Approval Form).

I have given SMTP setting at

System Administration à System Configuration à Collaboration à Groupware Transports

System Administration à Universal Worklist & Workflow à workflow à Mail

Please tell me am in the correct part of configuration of SMTP or is that any other place to set configurations?

Is there any other settings i am missing?

The error my CAF GP giving is "The system failed to send an e-mail notification to "

Your help is highly Applauded

Thanks! in advance.

Regards,

Kishore