-First, you need to have at least 2 working {pmg} servers
-(mail1.example.com and mail2.example.com) configured as cluster (see
-section xref:pmg_cluster_administration[Cluster administration]
-below), each having its own IP address. Let us assume the following
-DNS address records:
+First, you need to have at least two working {pmg} servers
+(mail1.example.com and mail2.example.com), configured as a cluster (see
+section xref:pmg_cluster_administration[Cluster Administration]
+below), with each having its own IP address. Let us assume the
+following DNS address records: