Hello!
I've installed Roundcube on my mail server (server details below). It works, it allows me to log in, but as soon as I enter the box and IMAP connection drops - it never comes back. That means when I click on any button inside web-interface, server waits until time out and shows me a 502 error.
I tried googling, but to no avail. What can I do about it?
Server details:
Raspberry Pi with updated raspbian, nginx, php5-fpm, mysql, postfix, courier.
Syslog for one such connection: http://pastebin.com/0cs72AWN
nginx access and error logs: http://pastebin.com/x3AFNwCh
php5-fpm access and slow logs: http://pastebin.com/NycSTU1t
imap debug log (last part): http://pastebin.com/dbY44bmi
Additional info and config files on request. Sorry about x'es in logs, don't want to disclose my server.
Is there anything in the Roundcube error log? In the IMAP log I see the following line which maybe some of your problem:
[26-Feb-2016 01:21:45 +0300]: <qqn1lqtt> [EF0A] S: * OK [ALERT] Filesystem notification initialization error -- contact your mail administrator (check for configuration errors with the FAM/Gamin library)
Thanks for the reply.
There are no records in Roundcube error log. Last record is hours before that, mysql-related (I was pointing it at wrong address, fixed). Maybe there is a way to turn debug logging on.
As for that gamin problem - fixed that by installing 'gamin' package. Main problem is still there. I noticed that sometimes IMAP connection drops even before list of letters is fetched, and sometimes it holds enough time for the first refresh.
Try enabling imap_debug in Roundcube and post the log.
I've checked that "$config['imap_debug'] = true;", deleted previous debug log and retried connection. Here's full log, from pressing "Login" to 502 screen.
http://pastebin.com/8JZZ8kGp
Also there's one such log in original post for comparison.
I don't see any problem with the mail server so my guess would be the problem is with the fpm nginx connection.
I think I found the problem. In Roundcube config file I had $config['default_host'] = '%t';. I've set it to $config['default_host'] = 'localhost'; and it started working like it should. Kinda strange, because I have three different domains on this box.
SKaero, actually you were right. Problem was not with Roundcube itself, problem was with everything else. Storage was slow and was blocking mysql queries. PHP-FPM had too many children and couldn't finish any job in time. General server optimization solved the problem completely.