What to do if you receive a 'Connector certificate expiring soon' alert from Microsoft?

Scenario

You receive an alert similar to this from Microsoft:

"Mail flow connectors rely on valid certificates for authentication and attribution. If you let one of your certificates expire, mail flow could be disrupted, depending on how you have configured your connectors. Please renew any expiring certificates to avoid this."

Example:

What does this mean?

This message refers to the certificate that securely routes your emails back from Exclaimer Cloud to your Microsoft 365 tenancy.

Exclaimer Cloud automatically renews your certificate 14 days before it expires; however, Microsoft may send you an alert up to 30 days before your certificate expires.

What do I need to do?

Since Exclaimer Cloud automatically renews the certificate, no action is required from you.

You can safely ignore these alerts.