+# Announce MTA-STS policy
+
+'_mta-sts.openstreetmap:v=STSv1;\040id=202001281902Z
+
+# Delegate MTA-STS policy for subdomains
+
+C_mta-sts.noreply.openstreetmap:_mta-sts.openstreetmap
+C_mta-sts.otrs.openstreetmap:_mta-sts.openstreetmap
+C_mta-sts.messages.openstreetmap:_mta-sts.openstreetmap
+