My previous post:
--- I thought I changed everything back the way it was before this problem started, but it's still causing trouble. Normal inline text messages are now being rewritten with Content-Type: application/DEFANGED so that no mail client I have available can display the text inline. This doesn't happen when I change file_default_policy to accept, but this was kept at defang even before this problem started.
Linux 2.2.22, Sanitizer 1.60, procmail 3.13.1, Postfix 20010228 ---
Just in case I wasn't clear, I did not mean text attachments. The Content-Type header for normal messages is being mangled so that the text cannot be displayed inline. Even with file_default_policy set to defang, the problem does not occur if I use the default rules and leave file_list_rules at the default of 15. If I define any rules or change file_list_rules to 0, the content-type is mangled.