diff --git a/artemis/domains.py b/artemis/domains.py
index 3b8e6d3b7..e194b3cce 100644
--- a/artemis/domains.py
+++ b/artemis/domains.py
@@ -5,7 +5,7 @@
 
 
 def is_domain(candidate: str) -> bool:
-    result = validators.domain(candidate)
+    result = validators.domain(candidate, rfc_2782=True)
     # validators returns True if correct, else raisable Error obj
     if isinstance(result, validators.ValidationError):
         return False