Make message clearer

#1030

Author: jcameron

lang/en

@@ -2151,7 +2151,7 @@ check_dnsok3=BIND DNS domains will be hosted on a services host
 check_etlsa=TLSA DNS records cannot be created on your system : $1
 check_dnsmaster=however, the default primary DNS server $1 is not a fully qualified domain name
 check_dnsmaster2=however, the default primary DNS server $1 does not resolve to an IP address
-check_dnsmaster3=however, the default primary DNS server $1 resolves to IP address $2 which does not appear to belong to this system.
+check_dnsmaster3=however, the default primary DNS server $1 resolves to IP address $2 which does not resolve to an IP address of a network interface on this system.
 check_mysqlok=MySQL $1 is installed and running
 check_mysqlok2=MySQL client programs are installed for use with a services host
 check_mysqlok3=Virtualmin is using a remote MySQL server