Exclaimer Google Drive & Calendar notifications not received :

Scenario

After configuring Exclaimer Cloud, you find that Google Drive share notifications and Calendar reminder emails are not being received.

Resolution

In order to ensure that these messages are delivered correctly, it is necessary to stop them from getting routed to Exclaimer Cloud.

To do this, follow the steps below:

To complete the setup described below, you will need:
G Suite Super Admin credentials

Login to the Google Admin console as a super admin: https://admin.google.com
From the Google Admin console, click Apps, then click Google Workspace, then click Gmail.
Click Compliance, then select Content compliance.
Click Edit on the Send to Exclaimer Cloud rule.

The Edit setting window is displayed.
In point 2, from the drop-down list, select If ALL of the following match the message:

Warning: Make sure the above steps are completed. If the setting is not set to If ALL of the following match the message, you will experience mail flow issues.
Click ADD to add a new expression:

The Add setting window is displayed.

You now need to add an expression to exclude senders containing calendar-notification@google.com, as described below:
From the drop-down menu, select Advanced content match.
From the Location drop-down menu, select Sender header.
From the Match type drop-down menu, select Not contains text.
In Content, enter calendar-notification@google.com.
Click SAVE to save the new compliance rule.
Click ADD to add another new expression (make sure, in point 2, from the drop-down list, If ALL of the following match the message is selected)

The Add setting window is displayed.

You now need to add an expression to exclude senders containing google.com, as described below:
From the drop-down menu, select Advanced content match.
From the Location drop-down menu, select Envelope sender.
From the Match type drop-down menu, select Not contains text.
In Content, enter google.com.
Click SAVE to save the new compliance rule.