hi , i 've postfix ,ldap ,cyrus and multi domain . all works fine . but i've to give an composed login on my netscape mail client (for exemple) to retreive my mail : user1_domain1 for the mail [EMAIL PROTECTED] the mail for [EMAIL PROTECTED] go to the maildrop [EMAIL PROTECTED] the domain's gestion in Postfix main.cf : ldapdomain_server_host = zarma ldapdomain_server_port = 389 ldapdomain_search_base = o=hosting ldapdomain_query_filter = (&(objectclass=dnsdomain)(domain=%s)) ldapdomain_result_attribute = domain My pam_ldap.conf : host zarma #base domain=domain1, o=hosting base o=hosting ldap_version 2 #scope sub # The user ID attribute (defaults to uid) pam_login_attribute uid perhaps the soluce is in the pam_ldap.conf ? Or a deal with postfix instance on virtual Ip .... when i try base domain=domain1.com, o=hosting ( in "static" mode for test , the mailbox does not exist ) . i' just want that cyrus check the ldap domain and after the ldap user . so i'll can configure netscape mail client (for exemple) to retreive my mail : user1_domain1 for the mail [EMAIL PROTECTED] but i can't retrive it with user1 login .... thanks for your help . Philippe Izoret