Disable squirrel or horde from webmail.

If a client only wants to use either Horde or SquirrelMail, then follow these steps:

1)
The the client wants to disable Horde:

root@server1[/]# vi /var/cpanel/users/username
Add the following lines:

skiphorde=1
skipsqmail=0

save the file.

root@server1[/]# Service cpanel restart

If a client wants to disable Horde and disable SquirrelMail then add these lines:

skiphorde=0
skipsqmail=1