A lot of my users are having problems with spam not getting filtered out of their mailboxes due to those spams not having subject lines. If there's no subject line, the subject line doesn't get rewritten with rewrite_header.
Many or most of them are using email software that doesn't have much in the way of complex filtering ability - filtering on a different header is pretty hard or impossible. Is there a way to force a subject line to be inserted if there isn't one already? -- Daniel Drucker / [EMAIL PROTECTED]