Hello,
I have a transport rule that uses a disclaimer to add a signature to everyone's emails. When emailing internally within the company the HTML looks good and appears as it should. The problem is when emailing externally
the HTML seems to not get applied. I am wondering if anyone can help me figure out what is seemingly turning this supposed to be HTML into what seems to be plain text. A quick note is that we are using variables like %%displayname%% and those are
getting interpreted correctly on all emails sent internally and externally. Thank you very much to anyone who is whiling to provide some knowledge on this.