Emanuel: > Is it possible to create different files with different IP addresses so > that when sending an email they are sent from different round maps?
You would use master.cf entries with different smtp_bind_address or smtp_bind_address6 settings, and select one with a filter command. With master.cf entries /etc/postfix/master.cf: relay-1 unix - - n - - smtp -o smtp_bind_address=1.2.3.1 relay-2 unix - - n - - smtp -o smtp_bind_address=1.2.3.2 relay-3 unix - - n - - smtp -o smtp_bind_address=1.2.3.3 relay-4 unix - - n - - smtp -o smtp_bind_address=1.2.3.4 Then you need a nested table which requires a restriction class. /etc/postfix/main.cf: smtpd_client_restrictions = check_client_access inline:{ { 200.58.x.x = class1 } { 200.58.x.y = class2 } } restriction_classes = class1, class2 class1 = check_client_access randmap:{filter relay-1:, filter relay-2:} class2 = check_client_access randmap:{filter relay-3:, filter relay-4:} Instead of inline:{}, a hash or pcre table would work too. Wietse