Delivery Routing in Mimecast

Last Modified on 24/01/2020 11:54 am GMT

Delivery Routing allows you to specify where an email should be passed to after it has been processed by Mimecast. It is required to specify one for your internal domains. External domains will route to their MX records when no policy is set.

Definition

The Delivery Routes definition specifies the address of where to deliver emails when it is used. You must configure the Definition first.

  1. Log into your Mimecast Account at https://login.mimecast.com

  2. Select Administration Console

  1. Go to ‘Administration > Gateway > Policies’

  1. From the Definitions dropdown, select Delivery Routes

  1. Select New Route Definition

  1. Set the name (Description) for the Definition
     
  2. Enter the Hostname or IP Address of the next mail server

  3. Select the Port to use for delivery (Standard is port 25)

  1. If you have a second Delivery Route definition, you can specify for this to be used as a backup route

  1. If your server requires SMTP Authentication for delivery, expand the Optional SMTP Authentication Settings section and enter these here

Note: This is not required for Office 365

  1. Press Save & Exit

 You can test the connection when editing the Definition by selecting Test Connection – Strict TLS or Test Connection – Relaxed TLS.


Policy

Once you have created your definition, you will need to create an accompanying policy to determine when it is applied.

  1. Log into your Mimecast Account at https://login.mimecast.com

  2. Select Administration Console

  1. Go to ‘Administration > Gateway > Policies’

  1. Click into Delivery Routing

  1. Select New Policy

  1. Give the policy a name (Policy Narrative)

  2. Set Select Route  to the Definition you created

  1. Set the scope for the policy under Emails From and Emails To

  1. Press Save & Exit

Only one Delivery Routing Policy will apply to an email. If you need to ensure a policy is picked, you should enable the Policy Override option within the policy.


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