Exchange Server 2007 - Manage send as permissions dissapearing
We have a problem with Exchange 2007, where by if you give a user 'Send As Permissions' or 'Manage Full Access Permissions' the setting stays for about half an hour then dissapears. This is causing all kinds of complaints from staff as they use PARs software to send emails out to parents and it keeps failing when the settings in exchange drop out.
5 users are given full access to a mailbox as PARs only allows you to send emails via one specified address.
The only quick fix i can think of is to create a new account and ask all members of staff to logon as that user to send emails home so they already have full permissions to that mailbox but I would still like to get it working so that they can remain logged onto their own accounts and send via the shared mailbox.