Your Internet Address has changed since the beginning of your Mail session. To protect your security, you must login again

If you are unable to login into Webmail , and you are getting an Error: “Your Internet Address has changed since the beginning of your Mail session. To protect your security, you must login again.”

To fix this problem, you may do the following:

1)You can turn off ‘checkip’ feature in Horde server-wide.

2)Edit the /usr/share/psa-horde/config/conf.php file in the Plesk server and the change the following lines.

$conf[‘auth’][‘checkip’] = true;
to
$conf[‘auth’][‘checkip’] = false;

Please note that this modification cannot be configured per user basis and will affect all the webmail users in the server.