Junk characters in e-mail

Hi! First of all, I have no idea if my problem is php or Postfix related, thus the cross-post. Every e-mail sent out from my server by a php script ends with a string of junk characters, they're not the same from different scripts and of course not to be found anywhere in the code. Example: Thank you! 4 ^m Nɢ*Nj j yuɼ8=j{*̵ As of what I know, every file, including the html and php files are UTF-8 encoded to be able to cope with Swedish characters, but the Swedish characters haven't been present in the e-mails I've tested with so far. Any ideas? Thanks, Anders Norrbring