We are using Basecamp for project management and Exchange for our email. The problem we are having is when we get an email from Basecamp and a user replies to it, it isn't posted to Basecamp. Basecamp requires plain text email, however most email clients default to Rich Text/HTML.
I did some tests using Mail and Outlook, both on a Mac. When using Rich Text (Mail) and HTML (Outlook) from my Exchange email account the message did not appear on Basecamp. When using plain text from my Exchange account the message did post. It isn't so simple as that....
If I change the sending server to my personal email account (non-Exchange, Bluehost IMAP) and send it with the Rich text option, it works and is posted to Basecamp.
Is there a configuration in Exchange that is getting in the way? Can Exchange be configured to send as plain text and HTML? Any other fixes that people know about?