On Mon, 4 Apr 2005, John Peacock wrote:
qmail internally just counts the number of Received: lines and bails when it exceeds a maximum (100).
Qmail also pays attention to the Delivered-To header. I know because it causes bounces when for some unknown reason spammers decide to add Delivered-To lines to their messages. Qpsmtpd lets it through and qmail ends up rejecting it and sending a bounce to the SMTP FROM address, which is either an innocent third party or nonexistent (in which case I get a double-bounce message). The error message is
This message is looping: it already has my Delivered-To line. (#5.4.6)
Ideally qpsmtpd should never let anything through that qmail isn't going to accept.
-- Keith C. Ivey <[EMAIL PROTECTED]> Washington, DC
