Email Security

cancel
Showing results for 
Search instead for 
Did you mean: 
cancel

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

  Important: Migrate from Secure Email Virtual C100V Models to Avoid McAfee-Related Issues Dear Valued Customer, We are reaching out to ensure your Cisco Secure Email environment continues to operate at optimal performance and reliability. As worklo...

dmccabej by Cisco Employee
  • 1515 Views
  • 2 replies
  • 0 Helpful votes

Good Morning,We are looking at moving/building new a vESA in AWS.  Just checking to see if anyone has done this.  Any information would help.  I would think it would be similar to "standing up" in a VM environment.TIA,Doug

We are running 10 ESAs and 1 SMA in our CES environment. I am able to open up a CLI connection to each server independently using putty. Unfortunately due to the method in which you have to open up a 'proxy' connection first, then the connection to t...

Trying to update ssh settings on a M690 ESA running AsyncOS 13.0.0-249. When I logon to the device and run sshconfig I am not presented with sshd as an option to configure ssh settings. The only option I have is to edit user keys. Looking in the conf...

 Hi Dear Support I am using vESA C600v with AsyncOS 13.5.1-277 and the problem is, can't get SBRS Score from all email senders. Therefore, all emails match to the none, according to HAT configuration & goes to the Quarantine as a spams.I check follow...

group2xxx by Level 2
  • 5210 Views
  • 5 replies
  • 10 Helpful votes

Hi guys, I have a few questions on Cisco ESA regarding SAN certificate.On our client's environment, they have 2 appliances using multiple domains in cluster mode, so they would like to determine the appliance certificates for incoming and outgoing. T...

fabc1 by Level 2
  • 5415 Views
  • 8 replies
  • 5 Helpful votes

Hello All,   We have some customers which are looking to customize the appearance of the Safe Unsubscribe banner that is inserted “automatically” by ESA when detecting a Graymail message and enabled for Safe Unsubscribe feature (as below).     Do yo...

SafeUnsubscribe.png
mpetcu by Frequent Visitor
  • 3565 Views
  • 2 replies
  • 0 Helpful votes
Unanswered Topics