Unable to open Horde webmail:
Internal Server Error
CGI scripts don't work on a domain.
Log file shows
'/var/log/httpd/suexec_log' the following error:
uid: (10021/horde_sysuser) gid: (510/510) cmd: cgi_wrapper target uid/gid (10021/510 or 504) mismatch with directory (0/503) or program (0/0) uid: (2523/horde_sysuser) gid: (2521/2521) cmd: cgi_wrapper directory is writable by others: (/var/www/cgi-bin/cgi_wrapper)
Incorrect permissions for
chown -R root:root /var/www/cgi-bin/cgi_wrapper chmod -R 755 /var/www/cgi-bin/cgi_wrapper
NOTE: Directory could differ from the one in example, take a look on path in the error.