Banging head against wall - Major issue with quotas, email and webmail.

We've been struggling with this forever.
Have a server that runs like a dream, until, it stops.

- Unable to list quotas in WHM.
- Unable to list email queue in WHM
- SPAMD shows failed
- Neomail and Squirelmail refuse to load, or generate IMAP errors.
- Email just backs up in the queue and never delivers.

We are running the latest Release version of CP.

- Have tired downgrading to Stable, no help.
- Have tried upgrading to current and edge, no luck.
- Have tried reinstalling, uninstalling, ripping out by the roots, etc of SA and Exim, no luck.
- Have recompiled, reinstalled and waved the dead chicken, no luck.
- Have tried restarting things, doesn't help.

Only fixes have been to force a cpanel upgrade, however that no longer seems to unstick things, and reboot.

I fail to see twice daily reboots of a production server to be a "solution".

Any ideas? I'm beyond stumped here.

 

I believe there is at least 1 ticket open with Cpanel on this, but I don't have the #. I'll check out the admins. We're using 1 company now, but another opinion can't hurt.

Right now, we think it may be a ram issue, so are having the hardware checked out. If that doesn't work, I'll be getting in touch with folks. Thank you!