How to edit the SMTP Server to send voicemail

How the system choose the SMTP Server to send the email?

1.Accordding to the voicemail owner's team,search whether there is a SMTP server of this team.If it exists,then use it to send the email.

2.If no SMTP Server on Step 1,then use the default SMTP server which do not belong to any team.

3.If no SMTP Server on Step 1, Step 2 , stop send the voicemail

Now,we known the rule which how to choose the SMTP Server,then we can edit the satisfied SMTP Server to send the voicemail

How to setup the SMTP Server,please refer to :

【mail_server】