I think the high number of IMAP folder will cause RoundCube to go nuts, that is the effect when you click into:
http://192.168.1.18/rcube/?_task=settings&_action=foldersnothing except a BLANK PAGE is shown.
It happens only to the user whose total number of IMAP folders including all the cur tmp new reached about 1530
It appeared to be the reason, because when adding any new folders at that stage the BLANK PAGE @ ?_task=settings&_action=folders symptom shows up, it became OK when the new folder gets deleted at IMAP folder side (by passing Round Cube).
I experimented that if I deleted away a set of existing folders then it will still allow me to add the same new folders that I had originally intended to add (but originally failed).
Therefore I began to suspect that the high number of total folders had met a limitation within RoundCube. I had initially thought that some folders' contents had been corrupted, but it is proven not the case, as I moved these folders into another users account, they appeared OK in Round Cube.
Could I please know what is the official MAX total number of IMAP folders Round Cube can take? Is there a way to increase it?
Or is it a memory allocation issue?
Some users are complaining about another problem that they can not attach more than 4 attachments in out-going mails, it hangs when trying to add the forth file. The sizes of files are about 1MB each.
Where can I tweak in the server to increase memory allocation to Round Cube? Is it a PHP server setting?
Thanks.