Hello,
I moved Roundcube from one server to another and since this move every request are very slow, 3-4 seconds for login, loading a message, changing folder, ...
So, I enabled IMAP debug mode but I think this delay is not coming from IMAP as it takes 3-4 seconds before something is logged on the server.
I noticed that on the previous server the users were marked as coming from "localhost" in the "mail_host" column of "users" table but since the move the "mail_host" column is set to the complete hostname of the new server.
Here is the host defined in the config: $config['default_host'] = 'localhost'
So I guess the delay is coming from a DNS issue.
Any help will be very welcome!