Merge pull request #42 from mailsac/add_ip_whitelisting_section

Add whitelist request section

help/missing_mail.rst

@@ -1,3 +1,5 @@
+.. _Dashboard: https://mailsac.com/dashboard
+
 .. _doc_missingmail:
 
 Missing Mail
@@ -79,6 +81,21 @@ Mandrill
 Messages sent through Mandrall are often `queued <https://mandrill.zendesk.com/hc/en-us/articles/205582717-Why-does-a-delivered-message-say-queued->`_
 and are not sent immediately.
 
+Request Whitelist
+-----------------
+
+Whitelisting is only necessary if mail delivery is being slowed due to Mailsac
+throttling. A whitelist request can be submitted using the `IP Whitelist Form 
+<https://mailsac.com/whitelist-request>`_ from the Dashboard_.
+
+Whitelisting can be requested for:
+
+- IP addresses or networks
+- Sending domains
+- Sending addresses
+- Receiving domains
+- Receiving addresses
+
 Contacting Support
 ------------------
 
@@ -93,4 +110,4 @@ receiving mail.
 * Time frames when messages were lost. A ball park is ok, like,
   "from 8am - 9am on Dec 3rd GMT we sent 100 messages and only 85 were received"
   or just "I tried sending 5 messages from 8am - 9am GMT Dec 3rd and none of
-  them went through"
+  them went through"