truncated long domains in error messages; updated error messages

src/registrar/models/domain.py

@@ -365,7 +365,9 @@ class Domain(TimeStampedModel, DomainHelper):
             for addr in ip:
                 if not cls._valid_ip_addr(addr):
                     raise NameserverError(
-                        code=nsErrorCodes.INVALID_IP, nameserver=nameserver, ip=ip
+                        code=nsErrorCodes.INVALID_IP,
+                        nameserver=nameserver[:40],
+                        ip=ip
                     )
         return None
 

src/registrar/utility/errors.py

@@ -106,7 +106,9 @@ class NameserverError(Exception):
         NameserverErrorCodes.MISSING_HOST: (
             "Name server must be provided to enter IP address."
         ),
-        NameserverErrorCodes.INVALID_HOST: ("Name server, {}, is not valid."),
+        NameserverErrorCodes.INVALID_HOST: (
+            "Enter a name server in the required format, like ns1.example.com"
+        ),
     }
 
     def __init__(self, *args, code=None, nameserver=None, ip=None, **kwargs):