Roundcube error :: SERVICE CURRENTLY NOT AVAILABLE! Error No. [500]

[Alec:D]

This error occurs on Linux Cpanel server because of RoundCube database structure has not updated properly.

Resolution :

Access your server with root user and execute the belwo command :

[root@server~]# /usr/local/cpanel/bin/update-roundcube-sqlite --force

It will update the RoundCube database forcefully on the server an fixed this issue.

Done..

[Pongers]

Thanks Alec,
Hope this trick will help someone who's using RoundCube, I am glad i haven't face any such error on my squirrelmail till date