RainLoop logs out while logging in with a new user

[siramthar]

I have the following issue while loading some of my mailboxes. Most of them work fine but some of them just don't work. They start to load, but at the end of the loading process it just fall back to login screen.

I checked mailboxes itself, they are working fine in other clients. Also, RainLoop tested the connection, there was no problem on network side. Mailboxes are not significantly bigger than other ones.

Might it be a issue with number of mailbox I have added?
Just as a sidenote, the mailbox I cannot access is a newly created one.
Does anyone have a clue?

The Rainmail log shows:*

[14:14:08.528][a0a7732f] IMAP[DATA]: < * BYE Internal error occurred. Refer to server log for more information$
[14:14:08.528][a0a7732f] IMAP[ERROR]: Stream Meta: Array
(
[crypto] => Array
(
[protocol] => TLSv1.2
[cipher_name] => ECDHE-RSA-AES128-GCM-SHA256
[cipher_bits] => 128
[cipher_version] => TLSv1.2
)

[timed_out] =>
[blocked] => 1
[eof] => 1
[stream_type] => tcp_socket/ssl
[mode] => r+
[unread_bytes] => 0
[seekable] =>
)
IMAP[ERROR]: MailSo\Net\Exceptions\SocketReadException: MailSo-Net-Exceptions-SocketReadException (NetClient.php ~ 515) in /var/www/rainloop/rainloop/v/1.12.0/app/libraries/MailSo/Net/NetClient.php:515

[siramthar]

Found the problem, it was with the way the user was created. It had no /home/user in the server created. Possibly it was because it was created using useradd (which doesn't create folders automagically) instead of adduser.