Add resolution to allow for resolving email addresses to their corresponding domain.

Core/Resolutions/Core/EmailToDomain.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+
+
+class EmailToDomain:
+    name = "Email To Domain"
+    category = "Network Infrastructure"
+    description = "Get the Domain that an email address belongs to."
+    originTypes = {'Email Address'}
+    resultTypes = {'Domain'}
+
+    parameters = {}
+
+    def resolution(self, entityJsonList, parameters):
+
+        returnResults = []
+
+        for entity in entityJsonList:
+            primaryField = entity['Email Address']
+            # There is no provider that I am aware of that allows '@' signs in the user part of the email.
+            try:
+                returnResults.append([{'Domain Name': primaryField.split('@')[1].strip(),
+                                       'Entity Type': 'Domain'},
+                                      {entity['uid']: {'Resolution': 'Email To Domain',
+                                                       'Notes': ''}}])
+            except Exception:
+                pass
+
+        return returnResults