📎 AI Summary:
The thread discusses an issue with Outlook 2016 on Windows 10, where the user encounters a "554 5.2.2 mailbox full" error despite attempting to free up space by deleting emails, including from the Recycle Bin. The original poster suspects their email storage is full due to retained deleted files, but progress has stalled. A later response clarifies that the user may need to permanently delete items from the 'Deleted Items' folder, as simply removing them once only moves them to that folder, not freeing server space.

BudVitoff

Honorable Member
Joined
Sep 8, 2012
Messages
70
Thread Author #1
Running Outlook 2016 under Windows 10.

Everything was running smoothly when all of a sudden a couple of weeks ago, we started getting the error message "554 5.2.2 mailbox full" and we could not send any messages. We discovered that although the system implied that the recipient had the full mailboxes, it was really our own system that had the problem. We trimmed everything of ours down to ridiculously low levels but that didn't happen. Just in case, we did the same for our recipient, but that didn't help. We even emptied the Recycle bin thinking that deleted files didn't actually make space available until we did that. More research indicated that our server saves deleted files for some time and it filled up its space, or something like that. So we've hit a wall and can't get past it.

Any ideas?
 

Solution
Just to be clear, did you delete items from the 'deleted items' folder? Deleting them once just moves them to above mentioned folder. You need to remove them from deleted items to actually delete them from the server

Neemobeer

Windows Forum Team
Staff member
Joined
Jul 4, 2015
Messages
8,995
Just to be clear, did you delete items from the 'deleted items' folder? Deleting them once just moves them to above mentioned folder. You need to remove them from deleted items to actually delete them from the server
 

Solution