A client machine on Outlook 2007 with message format set to HTML which is the standard setting on our organization has no suddenly run into this weird issue. When the user creates a new e-mail or replies to a received e-mail the font changes to a huge font. The recipient gets the email in a normal font size. If you go into the sent items, the email font is normal size. I've gone into tools, mail format, font and everything is setup correctly, any ideas what caused this but more importantly how can I resolve this?