After upgrading Debian, OpenDKIM sometimes stops running or fails to properly restart. If you don’t actively monitor your ZCS server, the only way to detect this is either through a growing mail queue of unsent messages or through a note in the ZCS server admin panel.
Usually, manually restarting either OpenDKIM itself or the whole ZCS server once “fixes” the problem:
# service zimbra restart
# /etc/init.d/zimbra restart
In other cases, fixing the permissions may help:
# /opt/zimbra/libexec/zmfixperms -verbose -extended
Problem description (In WP 2.8.3 and earlier, the admin password can be reset remotely without WordPress generating a new one, locking-out the admin):
[Full-disclosure] WordPress <= 2.8.3 Remote admin reset password
For a quick-fix, see:
i.e., in wp-login.php, replace the line
if ( empty( $key )
if ( empty( $key ) || is_array( $key ) )
If your WordPress installation has been hacked already, here’s an emergency password reset script you can use to reset and regenerate your admin password.
A German explanation of the security bug and how to fix it can be found on heise online:
Lücke in WordPress ermöglicht Aussperren des Admins
[Update 20090812: Now that a security update is available, users are advised to update to WordPress 2.8.4]