Yes -- this is normal. When you send an eTrigue email, all of the links in the email, including the opt-out link, are coded to be specific to the original recipient. This is partly how eTrigue knows who you are when you visit an email. When you forward the email from an email client, like Microsoft Outlook, the coded links do not change. So, when your co-worker clicks on the links in the email, she is identified as you.
Rather than forwarding the messages that you receive from eTrigue, the best practice is to create your co-workers as Prospects in the DemandCenter database, and include them in your internal proof/test lists.
To learn how to add a single new Prospect to your DemandCenter database, click here.
To learn how to import a list of Prospects into your DemandCenter database, click here.
To learn how to build a proof list, click here.