What’s new – Jul 22, 2025
Over last couple of years, Sophos Email has been sharpening its protection against interception of emails in transit by cybercriminals. The Transport Layer Security (TLS) is the best protection against such interceptions. With the launch of the TLS report, Sophos Email provides you a comprehensive visibility into TLS encryption of your inbound and outbound messages – wherein you get the insight not only into the details of the TLS version applied to a message, but also into the reason for delivery failure of the message that did not meet requirements of your TLS configuration in Secure Message Policy.
Watch the video at the end of this post to familiarize yourself with this new report.
Applies to the following Sophos products
Sophos Email Advanced
Dashboard
Sophos Email provides you a summary of TLS encryption applied to inbound and outbound emails right in the dashboard, as shown in the screenshot below.
Note: Currently, TLS report is available only for the gateway domains. If you have domains only in M365 MFR mode, all your emails exchanged with M365 are transported over TLS. However, you will have to configure M365 for TLS applied to messages exchanged with your recipients and senders.
Message Summary
In the Message Summary report, you get statistical report about the number of emails transported inbound and outbound over TLS v1.3, TLS v1.2, and unencrypted. As highlighted in the screenshot below, you get a timeline view of emails transported over TLS with a breakdown across versions, when you hover the mouse over the chart.
Message History
With this launch, Sophos Email has an improved filtering in Message History report, using which you can filter messages by their category, status, and TLS encryption applied – all in a single place allowing you to combine different and multiple filtering options and their hierarchies, as indicated in the screenshot below.
You also get visibility into messages rejected because their TLS did not meet the requirements of your Secure Message Policy, as indicated in the screenshot below.
