To be clear, we have only one edition of iRedMail, it's free and open source. When we talk about "Pro", we mean the web based admin panel - iRedAdmin-Pro.
You can check features of iRedMail here: http://www.iredmail.org/features.html
Features of iRedAdmin-Pro: http://www.iredmail.org/admin_panel.html
1. Iredmail-pro what server config requires or can we host in VMware to third party
Yes you can run it in VMware, Xen, KVM virtual machine. Actually, it depends on server OS, if you can get Linux/BSD distributions supported by iRedMail running, then you can run iRedAdmin-Pro.
2. Does it support Ms outlook as client & Whatever policy we implement through web admin it apply in ms outlook like - I disable sending mail will it applicable on ms outlook.
Yes.
3.Can we set moderator?
Sorry, what do you mean "moderator"? What features of "moderator" do you need?
3. Can I take yearly support package if yes then What is the cost?
Unfortunately, we don't have yearly support package, but we provide remote support service and it costs only USD $29 per case.
4.Can i set policy to a email id whatever sent a mail send BCC to define email address effective from ms outlook
Yes. You can define either per-domain or per-user sender BCC or recipient bcc.
5. for client Web login what are the option can we have out logo & customize.
Sure.
6.Which version should we choose. LDAP/SQL/ - Please suggest.
Just choose the one you're familiar with. For example, if you're good at MySQL administration, then you should choose mysql for easier management.