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-rw-r--r--designate/objects/rrdata_mx.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/designate/objects/rrdata_mx.py b/designate/objects/rrdata_mx.py
index 7d924358..99387d1e 100644
--- a/designate/objects/rrdata_mx.py
+++ b/designate/objects/rrdata_mx.py
@@ -35,6 +35,9 @@ class MX(Record):
if repr(int(priority)) != priority:
raise ValueError('Value is not an integer')
+ if not exchange.endswith('.'):
+ raise ValueError('Domain %s does not end with a dot' % exchange)
+
self.priority = int(priority)
self.exchange = exchange