Running 5.0.19 OpenSource on RedHat
Small server, 15 users
All has been stable for the past couple of years
I recently had (2) Verizon/Motorola droid phones (android OS) start using their Zimbra accounts via IMAP.
This behavior only happens on emails sent from the droids, but any email sent show as repeated duplicate emails. To the point where the last week has produced >10,000 duplicate emails (from ~10 original sent emails from the devices).
Only one email actually leaves the server to the destination, but hundreds/thousands of duplicates show up in the sent file and take up space.
They keep repeating hour after hour, day after day, and I haven't found a way to kill it.
Anyone have any ideas?