Drop the domain check for rcpttocheck()

Mailman/Queue/LMTPRunner.py

@@ -357,9 +357,6 @@ class Channel(asynchat.async_chat):
             if '@' not in to:
                 return 'EERR_513'
             name = self.mlistname(to)
-            domain = self.domain(to)
-            sitedomain = get_domain()
-            if domain == sitedomain:
             if list_exists(name):
                 return
             else: