I setup an eFax account for a client who is using Office 365 Exchange with Outlook 2010 on about 12 workstations. They have very little need for faxing and we wanted to cancel the physical phone line (all other phones are VOIP). So I chose the $16/month plan that includes a max of 5 sending email addresses,
In Exchange ECP I added a email group fax@example.comwith all of the users set to have send as permission. (This would allow each person to send as fax@example.com and theincoming faxes would go to everyone).
After further discussing the solution with the client we decided that instead of a group we would use a shared mailbox. This accomplishes the same thing except instead of each person getting adifferent copy of the fax every person has access to the one fax and a single person canhandle it for everyone.
So I deleted the group ...