My efforts to fix maildrop have not been successful. However, I have a workaround for anyone else who hits this. It may be obvious to everyone but me, but it took me a while to think of!
Instead of writing: cc "|/my/crazy/mail/filter" write: cc "|/my/crazy/mail/filter && cat > /dev/null" Tada! No more delivery failures. Daniel -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]