Hi!

I use redhat9, postfix as mailserver, apache as webserver and squirremail as webmail server. I have been using this system since 2005 and it has worked correctly since today.
When I type www.mydomain.co.yu/webmail, appears the login form (it's ok). If I type wrong password it say me that the password or username is wrong (it's ok). But if I type the correct password, the browser shows me the following warning:

"Preference file, /var/lib/squirrelmail/prefs/username.pref, could not be opened. Contact your system administrator to resolve this issue."

Do you have any idea how to solve this problem?

The files in this directory have the user and group apache. Check this is a first step.


Rgds

Yes, the files in this directory have the user and group apache.

Does it happen for all users? What happens if you delete (after backup of course) the pref files?

Yes it happens for all users.
I have deleted the pref files and after the login I've got back the following error on my browser:

"Error opening ../data/default_pref
Default preference file not found or not readable!
Please contact your system administrator and report this error."

Here's what I see

lrwxrwxrwx 1 root root 41 Jan 28 07:20 default_pref -> ../../../../etc/squirrelmail/default_pref

and

# cat default_pref
full_name=
reply_to=
show_html_default=0
sort=0
left_refresh=300