:openstreetmap:257:\000\005\151\163\163\165\145\154\145\164\163\145\156\143\162\171\160\164\056\157\162\147
-# Make the virtual machine the primary MX with Bytemark as backup
+# Make the virtual machine the primary MX
@openstreetmap:212.110.172.32:a:10
@noreply.openstreetmap::a.mx.openstreetmap:10
3a.mx.openstreetmap:200141c9000104000000000000000032
+# Delegate MTA-STS policy for subdomains
+
+Cmta-sts.noreply.openstreetmap:mta-sts.openstreetmap
+Cmta-sts.otrs.openstreetmap:mta-sts.openstreetmap
+Cmta-sts.messages.openstreetmap:mta-sts.openstreetmap
+
# Publish an SPF record indicating that only shenron sends mail
# https://anders.com/projects/sysadmin/djbdnsRecordBuilder/