I need to filter mail sent to certain addresses through 'unhtml' to make sure all emails are in plain text before being forwarded on. I am using exim 4 and I think I need to do this by using procmail and altering my .forward files. I have been trying to do this all day and have spent ages going through the man pages and tutorials for procmail but have had no success. Someone surely has done this before but I can't find any examples. Can anyone please provide me with a site to go to that shows examples of this or similar setups. Even better than that would be if someone could post what I need to put in the .procmailrc file and the .forward file to get this working.