Article ID: 986, created on Oct 6, 2008, last review on May 7, 2014

  • Applies to:
  • Plesk 10.x for Windows
  • Plesk 9.x for Windows
  • Plesk 8.x for Windows
  • Plesk 7.x for Windows


The following error message is displayed upon logging into Webmail:

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


It means that Horde is accessed via an ISP that has dynamic proxies. The only solution is to turn the 'checkip' feature off in Horde.

To do this , the following file needs editing: "%plesk_vhosts%\webmail\horde\config\conf.php".

These two lines:

$conf['auth']['checkip'] = true;

should be changed:

$conf['auth']['checkip'] = false;

in order to switch IP address checking off upon logging into Webmail.

c0c38d2367acfa8909699e0b34b01dea a914db3fdc7a53ddcfd1b2db8f5a1b9c 85a92ca67f2200d36506862eaa6ed6b8 c45acecf540ecd42a4bbfb242ce02b1d aac4a8fcd879de03758354e15495d69a c796c01d6951fa24ed54c7f1111667c6 56797cefb1efc9130f7c48a7d1db0f0c

Email subscription for changes to this article
Save as PDF