Add Member to Distribution List
Distribution list members receives the email sent to the distribution list. They can also post email message to the list.
To add a distribution list member navigate to the following path:
Click on the Manage and then select Distribution List tab. Select the distribution list for which you wish to add a new member. Click on the List Memberstab and select the list member from Mailbox drop-down list. Click the Add button.
If Mailbox drop-down is empty then either all available mailboxes are already list member or there is no mailbox created. To create a new mailbox, see Add Mailbox section.