Is that possible to setup postfix mail server in my system(ubuntu server) with the details I have
domain name e.g: testdomain.in testdomain.in is pointing to xxx.xxx.xxx.xxx(our cloud based windows server 2012)
bigrock.in where we bought this domain name I have created A record under DNS to point our windows server by testdomain.in.
Now I want to setup postfix in my ubuntu system which has static IP as well. All I want is have mail ID like firstname.lastname@example.org able to send/receive mail.