Horde webmail shows the following error:
Service Temporarily Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later. Apache Server at webmail.testdomain.com Port 80
There is also an error in the Horde logs:
[Wed Sep 25 21:01:41 2013] [warn] [client 220.127.116.11] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Wed Sep 25 21:01:41 2013] [error] [client 18.104.22.168] Premature end of script headers: index.php
A warning appears while performing migration from another server:
WARNING:()The webmail service horde is unavailable. It will be replaced with <webmail> for the following objects: <list of domains>
Incorrect permissions on '
[root@plesk ~]# ls -ld /var/www/cgi-bin/cgi_wrapper
drwxr-xr-- 2 rgs psaserv 4096 Apr 14 13:32 /var/www/cgi-bin/cgi_wrapper
Horde has been installed incorrectly.
Correct the permissions:
root@plesk:~# chown root:root /var/www/
root@plesk:~# chown root:root /var/www/cgi-bin/
root@plesk:~# chown root:root /var/www/cgi-bin/cgi_wrapper/cgi_wrapper*
root@plesk:~# chmod 755 /var/www/cgi-bin/cgi_wrapper
If after correcting permissions you see the error
'Unable to get webmail password!', please see the following Knowledgebase article: http://kb.sp.parallels.com/en/115742
If Step 2 does not resolve the issue, reinstall horde using Plesk installer.