==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release):
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

.9.7; MySQL, Apache, no Pro

I have my a number of email addresses on the server.  Suddenly, neither SOGo nor Roundcube will correctly load my InBox on my main email address.

If I load RoundCube, the screen shows the normal info - On the left, the InBox has 330 unread, shows other Boxes (Sent, Junk, etc).  On the main form it says 'Mailbox is empty'.  If I move to the Drafts box, the Draft emails all show up.

On rare occasion, the InBox will actually load correctly.

Outlook shows all emails.

SOGo hangs trying to load/show the webpage.

I have changed dovecot.conf to include imap_max_line_length = 2M
I have also changed default_vsz_limit to 200M from 64M

I'm not sure what logs to look at - mail.log doesn't seem to show anything abnormal.

The mailbox in question is large (I think the Outlook version is 24G).

So, what logs can I look at; what edits can I make (longer load time if I have a timeout on my slow server, etc.), etc.?

Thanks so much.

Andrew