The disconnection of the server caused us serious problems, and to be honest, the level and nature of the abuse has become quite demoralizing. A short link which expires, or can be terminated, has some security advantages. A total of five parameters are automatically appended when you enable Google Analytics: utm_campaign: will automatically be the name of the campaign as it appears in Sailthru. utm_medium: will automatically be “email”. utm_source: will automatically be “Sailthru”. utm_term: will automatically be the name of the sending list as it appears in Sailthru. utm_content: if you are sending an AB Split or AB Winner or Auto Winner Campaign, this utm parameter will be added to your links. Recently bit.ly announced the addition of a premium service to its URL-tracking system. You can shorten a link right away, although you’ll need to enter a CAPTCHA code. Once you are sure that your WordPress site does not have Google Analytics code, go to Settings » Google Analytics.
See if you are using Classic Analytics (ga.js) or Universal Analytics (analytics.js).