Hi Is there a way with qmail, like as new sendmail, to check if the FROM domain adress of the sender is existing, like : HELO test 220 Mail ESMTP Club-Internet 250 front7.grolier.fr Hello d074.paris-204.cybercable.fr [212.198.204.74], pleas ed to meet you MAIL FROM: [EMAIL PROTECTED] 501 [EMAIL PROTECTED] Sender domain must exist Thank you ! -- Dimitri <[EMAIL PROTECTED]>