"A disk partition is at or near the total capacity" dashboard message on SMA (4376265)

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Title

"A disk partition is at or near the total capacity" dashboard message on SMA
Description

There is a possible issue that can happen which fills up the /var partition on the SMA with internal system emails.
Cause

This is caused by defect ID: K1-35998 or by an email misconfiguration.
Resolution
For an immediate resolution, upgrading to 14.0, 14.1 or 15.0 will clear out the /var partition and prevent the issue from happening again.

Versions with the fix:
- 14.0.336 or above
- 14.1.96 or above
- All 15.0 versions.
As a best practices approach, make sure that on Settings > Control Panel > Network Settings, at the bottom, uncheck the "Enable SMTP Local Server (Inbound)" if this feature is not used, which is to be able to receive email via Exchange Servers. Also if the "Enable SMTP Remote Server (Outbound Relay)" is enabled, make sure that credentials are in place, anonymous connections tend to cause loop/bounce-back issues. More info here.

If the issue happens on any versions mentioned above, or if the WebUI is down, contact support as soon as possible.
Defect ID

K1-35998

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