Mimecast for Outlook - Managed Senders

This article contains information on managing senders in Mimecast for Outlook, including adding or removing blocked, permitted, and auto-permitted senders, filtering sender lists, and trusting permitted senders for enhanced email security.

PAGE CONTENTS

• Overview
• Opening the Managed Senders View
• Filtering the Managed Senders View
• Removing an Auto-Permitted Sender
• Adding a Blocked Sender
• Removing a Permitted Sender
• Trusting a Permitted Sender

Overview

You can manage your list of addresses and domains in Mimecast for Outlook that are blocked, permitted, and automatically allowed. This is all achieved from your Managed Senders view. This view provides functionality to:

• Filter entries.
• Add entries.
• Delete entries.

Opening the Managed Senders View

To open the Managed Senders view:

1. Open Mimecast for Outlook.
2. Click on the Mimecast ribbon.
3. Click on the Managed Senders icon in the Email Gateway section.

There are three distinct lists of addresses and domains in the Managed Senders view. Each list can be managed separately:

• Auto Permitted: The sender addresses and domains are automatically added to your permitted list by being specified in an Auto Allow policy.
• Blocked: The sender addresses and domains are manually added to your blocked list (e.g., they've been flagged as spam).
• Permitted: The sender addresses and domains are manually added to your permitted list.

You can perform the actions listed below with the Managed Senders view open. See the relevant section for your Mimecast for Outlook version for further details.

Filtering the Managed Senders View

To filter one of the lists in the Managed Senders view:

1. Type into the Filter by Blocked Sender field. The list is automatically refreshed as you type.
2. Click on the All drop-down to filter the list by:
   • All.
   • Addresses Only: signified by the icon.
   • Domains Only: signified by the icon.  

Removing an Auto-Permitted Sender

Note:

As auto-permitted senders are added to this list because they are referenced by an Auto Allow policy, it is best to get your Administrator to review these policies before removing a sender.

To remove a sender's address or domain from your auto permitted senders list:

1. Click on the Auto Permitted tab in the left-hand pane.
2. Select the Item to remove.
3. Click on the Remove button from the top menu.

Adding a Blocked Sender

To add a sender's address or domain to your blocked senders list:

1. Click on the Blocked tab in the left-hand pane.
2. Click on the + Add Blocked button.
3. Type the address or domain into the text box.
4. Click on the Add button. The address/domain is displayed in the list.
5. Repeat steps 3 and 4 for additional addresses/domains.

   Note:

   You can enter multiple addresses / domains by separating them with a space (e.g. [e-mail] [e-mail] domain.co.uk).

6. Click on the Block button.

Permitting a Blocked Sender

To remove a sender's address or domain from your Blocked Senders list, and add it to your Permitted Senders list:

1. Click on the Blocked tab in the left-hand pane.
2. Select the Item to permit.
3. Click on the Permit button from the top menu.

Removing a Blocked Sender

To remove a sender's address or domain from your Blocked Senders list:

1. Click on the Blocked tab in the left-hand pane.
2. Select the Item to remove.
3. Click on the Remove button from the top menu.

Adding a Permitted Sender

To add a sender's address or domain to your Permitted Senders list:

1. Click on the Permitted tab in the left-hand pane.
2. Click on the + Add Permitted button.
3. Type the address or domain into the text box.
4. Click on the Add button.
5. Repeat steps 3 and 4 for other addresses / domains.

   Note:

   You can enter multiple addresses / domain by separating them with a space (e.g. [e-mail] [e-mail] domain.co.uk).

6. Click on the Permit button.

Removing a Permitted Sender

To remove a sender's address or domain from your Permitted Senders list:

1. Click on the Blocked tab in the left-hand pane.
2. Select the Item to remove.
3. Click on the Remove button from the top menu.

Trusting a Permitted Sender

If you have dynamic configuration enabled as part of Targeted Threat Protection - Attachment Protect, you can add users from your Permitted Senders list to your Trusted Senders list.

See Targeted Threat Protection - Attachment Protect Configuration.