need a cost effective complete topology for an exchange setup
1.2 servers with both configured as CAS and MailBox and configured in a DAG
2.Recommended Public DNS topology; can i ask my network register to create two Host records ( pointing towards to the public WAN interface of my firewall ) and point the MX record to the A Record and Internal DNS topology with regard to AD.
3. Want to divert all incoming mails to a mail hygiene system and which is the best product in this category
4. how to achieve routing of mails to two CAS servers for load balancing - is it possible via mail hygiene system and whether the hygiene system have a default mail relay system in place to divert to the CAS in a round-robin fashion
5. Plan to put the Mail Hygiene system in a DMZ