Here is My test scenario to configure postfix relay between two exchange environment(two Windows domain) Domain1: Domain name: Domain1.local Exchange server: Exch1.domain1.local Domain2: Domain name: Domain2.local Exchange server: Exch2.domain2.local Open Suse 14.4 and postfix server Host name: host1 I have to configure the Postfix relay so that i can able to send emails between domain1 and domain2 using Postfix relay. Right now domain1 and domain2 able to send email between using MX records. both domain has their own DNS server. I am behind the corporate firewall. Whole lab is internal test lab. nothing is routed to internet. I am new to OpenSuse. I need all the steps to configure this scenario. Thanks Gurvinder -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org