Unable to delete mailboxplan. Make sure the mailbox plan is not assigned to any mailbox
I have 11 mailboxplan for a client.
I want to delete those that are not associated with any mailbox, but get the error:
"Unable to delete mailboxplan. Make sure the mailbox plan is not assigned to any mailbox".
I have already verified that there is no mailbox associated with the mailboxplan I am trying to delete.
Any idea what it might be?
WebsitePanel Version 2.1.0 + Exchange 2013
Please note that Websitepanel is currently out dated by 4+ years, so i am not sure if this works in websitepanel, but in SolidCP there's a maintenance drop down where you can "restamp" all mailboxes from 1 plan to another, once you have done that you should be able to delete the plan fine (atleast in SolidCP).