In the 5.1 documentation it says:

"Location of campaign tracking files. Campaign tracking files log responses from campaign targets.
If you are running Sugar on an external network, select Default and accept the default location. If you are running Sugar on your internal network, move the Campaign_tracker2.php, Removeme.php, and image.php files from the Sugar root directory to a directory on your public Website so that you can track the responses of your campaign targets.

To specify the location of these campaign tracking files, select User Defined and enter the path in the field below."

(http://developers.sugarcrm.com/docs/...ation.4.5.html)

Does this actually work? Doesn't seem to work for me at all.

Will.