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Important Announcements

Cisco Secure Email Add-Ins No Longer Supported on Microsoft Outlook 2019

This is to inform you that, effective October 14, 2025, Microsoft Outlook 2019 is no longer supported for the Secure Email Encryption Service Add-In and Secure Email Submission Add-In.

To continue using these Add-Ins, we recommend upgrading to Microsoft 365. Starting October 2025, download and install the new manifest for:

- Secure Email Encryption Service Add-In from the CRES Admin Dashboard

- Secure Email Submission Add-In from the Cisco Software Download Portal

After downloading the manifests, follow the instructions provided in the Submission and Encryption Add-In guides. For more information, see: Cisco Email Encryption - End-User Guides.

TLS 1.0/1.1 Deprecation from AsyncOS for Secure Email Gateway, Starting version 16.5

We would like to inform you that starting with the AsyncOS 16.5 release, TLS versions 1.0 and 1.1 will no longer be available as configuration options in both the CLI and GUI.

To ensure secure email delivery and receipt, you should use TLS versions 1.2 and 1.3. These versions can be configured via the sslconfig CLI command or through the System Administration > SSL Configuration menu in the user interface.

For detailed instructions on updating TLS versions, please refer to the “System Administration” section of the User Guide for AsyncOS 16.0.x for Cisco Secure Email Gateway.

 

Forum Posts

Hi,I have 2 Cisco C170 on diffrent site's. Both of them stopt on the same day with being able to update the Sophos definitions. This was on December 8 2021. They both run version 11.0.4-004 and have an valid Feature Keys. If I run avupdate force I ge...

Screenshot 2022-03-23 163102.png

Hello,recently there was an issue the DNSSEC settings in our DNS Zone were inactive. It was solved after a few hours. Afterwards we did get reports some (not all) external organizations were unable to send messages to our organization.Apparently some...

Siebe by Level 1
  • 836 Views
  • 1 replies
  • 0 Helpful votes

Hi there, We are setting up the above appliance to replace a C170. At the moment it's going ok until we try to confirm the outgoing interface is accepting connections. We can telnet xx.xx.xx.xx 25 on the incoming mail port (data1) but not on the outg...

35kod by Level 1
  • 3086 Views
  • 14 replies
  • 0 Helpful votes