Connection to Storage Server Failed - persists across installs and MIAB versions

[fancyHeat]

Alright so, I've been having this issue for about 2 years, across multiple MIAB versions and installs. Box is running on Vultr with

I've got about 150 mailboxes in an account setup for some dev work I do, with alot of active connections.

When trying to log into webcube I get the following error:

If I reboot the box, I'll gain access again, but then the same error pops up in like 15 minutes and stays until I reboot again. Using a mail client still seems to work fine.

Here's the last line from the roundcube error log: [28-Aug-2024 20:18:33 -0500]: <thi95kte> IMAP Error: Login failed for [email protected] against localhost from mypublicip. Could not connect to ssl://localhost:993: Unknown reason in /usr/local/lib/roundcubemail/program/lib/Roundcube/rcube_imap.php on line 211 (POST /mail/?_task=mail&_action=refresh)

After so many installs and MIAB versions, I'm starting to think it might be the special Ubuntu images that Vultr gives. Or maybe the number of connection to the box, which isn't even crazy, it's just one per mailbox.