I recently created a template for a sales person that had two tokens in the subject line and body. The "lead.first name" token rendered properly, but the other token was for a lookup field in DCRM and even though the test looked normal, the email displayed a GUID for the recipient. This is what the subject line was displayed as: "Jason, re-evaluating the 48696767-d5cd-e011-a1cc-005056a32a27 VoC program?"
Has anyone came across this before? I'm wondering if this is a security setting or something with the corporate server of the recipient. We use other lookup field tokens all the time and have never seen this before. Any insight or personal experience would be appreciated!