I'm trying to use procmail and I'm having trouble getting it to set some headers. I have one mailing list that sets Newsgroups: in the header and I want to remove it. I have the following test recipe: :0 * ^Subject:.*\<testing * ^(Mime-Version:|Content-) | formail -IMime-Version: -IContent- If I understand it correctly, it should remove the Mime-Verion and Content headers. The recipe gets matched but then doesn't deliver correctly: procmail: Match on "^Subject:.*\<testing" procmail: Match on "^(Mime-Version:|Content-)" procmail: Executing "formail,-IMime-Version:,-IContent-" procmail: Assigning "LASTFOLDER=formail -IMime-Version: -IContent-" procmail: Notified comsat: "test@:/home/jep/formail -IMime-Version: -IContent-" >From jep at obrien-pifer.com Mon Feb 2 11:43:03 2009 Subject: testing Folder: formail -IMime-Version: -IContent- 1010 It looks like it's trying to put it in a folder starting with formail. I tried putting the mail file on the next line (/var/mail/test), which is the same way I do it on my kid's procmailrc's, but it seems to ignore it. Where does procmail get the LASTFOLDER thing from? Anyone know what I'm doing wrong? Thanks, James