IMAP4 Access to all the Mailboxes

In order to allow all the users to access their mailbox by the ixi-UMS Voice-Mail Server, global access rights are recommended. The access must be executed via a domain user, who is not part of a domain-administrative group. For Microsoft Exchange 2016 and 2019, this user needs a mailbox.

estos GmbH recommends the access with an explicitly set up "IMAP-User".

Please enable the administrative access for a domain user by entering the following command line in the "Exchange Administration Shell":

add-adpermission -identity "<DistinguishedName of Mailbox Database>" -user <Domainusername> -AccessRights GenericAll

After having changed the settings, the IMAP4 service must be restarted.