Connect Application: The Steps

Document created by user.oxriBaJeN4 Employee on Feb 25, 2016Last modified by user.Yo2IBgvWqr on Sep 25, 2017
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Applies To...


This page applies to new clients connecting with Mimecast using the Connect Application. If you are not using the Connect Application, click here.




Once you've logged on and confirmed your details, a wizard leads you through the steps you've to perform (see the table below). Some steps are optional, whilst others have dependencies on other tasks. When this is the case, it is made clear. For example:

Optional Step

Dependent Stepsequential_step.png

Connect Application Steps


The connect application is not aware of configurations made directly inside the Administration Console. All initial configuration must be made via the application, unless the default policies need altering.


Validate Your Domains

Allows you to verify that you own each of your internal domains. We start with your primary domain, but other domains can also be validated. You can also add subdomains once a domain is validated.

Synchronize Your Directory

Allows us to automatically create each user's Mimecast account. This enables your users to send and receive email and sign into our applications.

Add Additional Users

Allows you to add user accounts that do not currently exist in your directory.

Set Up Your Authentication

Allows you to specify the method to be used to authenticate users when they connect to our applications.

Prepare for Inbound Email

Allows you to set up your inbound email flow through us.

Set Up Your Outbound Email

Allows you to set up your outbound email flow through us.

Add Permitted Users

Allows you to let us know the external addresses that you regularly communicate with. This marks them as permitted senders, thereby bypassing the strict anti-spam screening applied to all inbound emails from unknown external senders.

Set Up Recipient Validation

Ensures only messages destined for valid internal email addresses are accepted. Emails that can't be matched against a valid internal address are rejected.

Modify Your MX Records

Routes your inbound email through us by updating your mail exchanger (MX) records. This designates us as the mail service responsible for accepting email on your behalf.

Secure Your Inbound Email

Looks at securing your firewall to protect you from messages received from a non-Mimecast IP address. The process differs depending on whether you have an Office 365 or On Premise or Hybrid exchange.

Set Up Your Journaling

Allows you to setup your journaling to ensure your Mimecast archive has a full and complete record of all email. This includes your internal email, and copies delivered to members of distribution lists.


Following the end of all mandatory steps, users in an On Premise environment must lock down your firewall. This is not required if you have an Office 365 or MSP Exchange, and is optional if you have a Hybrid Exchange. See the Firewall Lockdown page for further details.


See Also...