Email Delivery: Whitelisting Handshake Email

John Dill -

Handshake maintains highly reputable emailing domains to ensure that emails are delivered. However, email delivery can sometimes fail due to the various systems in between Handshake and students which are designed to prevent email abuse. In order to maintain high deliverability, Handshake monitors and acts on spam scores, blacklisting, IP throttling and more.

In addition to whitelisting IPs and domains, please identify any internal limitations you may have with receiving email and surface them to your University Success Manager.
(e.g. 5k rate limit for recipients every hour)

 

Whitelist by IP

We send email from a dedicated set of IP addresses, please whitelist all of these:

192.237.158.52
192.237.159.131
192.237.159.132
192.237.159.133
204.75.142.249
 

Whitelist by Domain (Optional)

We only send email from these domains:

joinhandshake.com
notifications.joinhandshake.com
mail.joinhandshake.com
m.joinhandshake.com
cm.joinhandshake.com
cmail19.com 
cmail20.com
outbound.createsend.com
 

How to Whitelist if you use Google Apps

Google Apps Console for Gmail as this will ensure no messages are flagged as spam. This can be accomplished by following this: https://support.google.com/a/answer/60751?hl=enThere are also some general guidelines for bulk emailing recommended by Google if you are mass emailing using Handshake: https://support.google.com/mail/answer/81126

 

How to Whitelist if you use Microsoft Office 365

Office 365 admin portals. This can be accomplished by following this: https://technet.microsoft.com/en-us/library/jj200718(v=exchg.150).aspx

Note: The new 'Clutter' folder can also be an issue. Please see this guide and share with users if this occurs: https://nicholscollege.bloomfire.com/posts/2536460-how-to-stop-mail-from-going-to-clutter-folder

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