No messages found in this mailbox.

[chris2016]

All,

I get the following error message when opening a mailbox with 44000 mails. The number of mails is displayed correctly, but they're not shown:

No messages found in this mailbox.

When in list-view, the first page of this mailbox is somestimes displayed. In thread-view the message above is always shown.

I've increased PHP timeout to three minutes and memory to 384 MB.

I'm using Roundcube 1.2.3 from Debian Stretch package. Activated are those plugins:

filesystem_attachments    1.0    GPLv3+    
jqueryui    1.10.4    GPLv3+    
managesieve    8.6    GPLv3+

IMAP-Server is Dovecot on the same machine.

I'm looking forward to any advice. Roundcube is a very nice webmail program, but I'm reliant on handling bigger mailboxes reliably.

Thank you in advance.

- Chris

[SKaero]

Enable imap_debug and post the log when you try to load the mailbox in question.

[chris2016]

It's working  

I had to assign more memory to dovecot processes.

Thank you!