I want to send a mail to a list of e-mail addresses at a time. how can i do it?

U can use Distribution list

A Distribution list is a list of e-mail addresses identified by a single name, such as list_name@domain.com. When an e-mail message is sent to the distribution list name, it is automatically forwarded to all the addresses in the list. MS Exchange allows you to manage centralized mailing lists for groups of users.

Thanx stevon

How to add a Distribution list ?

To add a Distribution list:

1. Go to MS Exchange->Distribution list menu of your Control Panel
2. Click the Add Distribution List icon
3. Fill in the form you will be taken to:

and How to To remove a Distribution list.

To remove a Distribution list:

1. Go to MS Exchange->Distribution list menu of your Control Panel
2. Click the Remove icon next to the list you need

I have a Distribution list but now I want to edit it. Plz. help

To edit an existing Distribution list:

1. Go to MS Exchange->Distribution lists menu of your Control Panel
2. Click the Edit icon next to the list you want to edit
3. Make necessary changes in the form you will be taken to: