Thanks , I have run into a different problem, the smtp service is not working for other instances of postfix.
It is only running on the main instance. Using a nmap,i found that smtp is stopped for other service. I have added this in main.cf inet_interfaces = smtp-2.xyz, xxx.xxx.xxx.xxx(ip address) in master.cf, this is added smtp inet n - n - - smtpd -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html
