how to configure SMTP server with .net domain instead of .com domain

I have two Questions...

1. how to to configure SMTP server with .net domain instead of .com domain in SharePoint 2010 ? please provide a steps to do this.

2. how to configure email server with my SharePoint 2010 list, means i want to send alert or mail is any changes i开发者_StackOverflown list. please provide suitable steps.

Thanking You ! ravikant

1. The "From" E-mail Address is specified in the Central Admin Console under System Settings -> E-Mail and Text Messages -> Configure outgoing e-mail settings. If you need to specify a seperate "From" address for the server default this can be done, but must be done so programmically and within the contents of a workflow. There is an example of how to do this here.

2. To configure notifications of additions or changes to a list I use SharePoint designer and workflows. You can configure a workflow to automatically initiate on either a creation or modification of a list item and then create a Send Email action within the workflow to route the message accordingly. More information can be found here.