nat (inside,outside) static = Provided 1 to 1 nat from external to internal and gets nested
within the object network group.
!
nat (inside,outside) source static = Provides internal traffic to get naTTed using the
Public naTTed ip address rather than using the global dynamic ip address otherwise packets
would get lost and dropped.

object network HQMS1
host 10.0.0.51
!
object network HQMS1_PUBLIC-IP (This object is referenced on a NaT static).
host 2.2.2.211
!
object network HQMS1
nat (inside,outside) static HQMS1_PUBLIC-IP service tcp smtp smtp
( Port Forward based on tcp port smtp).
!
object-group service Exchange tcp
description: Exchange ports
port-object eq https
port-object eq smtp
port-object eq 8081
!
access-list outside_in extended permit tcp any object HQMS1 object-group Exchange
!
access-group outside_in in interface outside  (Assign to outside in Interface).
!
!
nat (inside,outside) source static HQMS1 HQMS1_PUBLIC-IP destination
static HQMS1_PUBLIC-IP HQMS1