I've serv1.test.com (with qmail configured) and serv2.test.com (with qmail configured) ! I like : if [EMAIL PROTECTED] not in serv1.test.com then send email to serv2.test.com ! Other example ! AOL ! aol.com have many users ! this users not in 1 server, but in 2 ,3 or more servers !! and users are : [EMAIL PROTECTED] ! if AOL had used qmail, how she would do ?? Thanks !! And sorry my bad english :)