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
  • 876 Views
  • 2 replies
  • 0 Helpful votes

Resolved! ESA SMTP TLS

Hello there, just perhaps a few simple questions for the professionals - could you be so kind to answer ? Mailsettings at moment : TLS 1.1  1.2 preferred for in and outbound questions : - anyone know when 1.3 is offered in ESA- can i see how much fro...

We are currently managing our ESA (Email Security Appliance) without utilizing SMA (Secure Management Appliance) and have a requirement to schedule a DLP (Data Loss Prevention) report. Specifically, we need detailed information such as Sender ID, Rec...

sv7 by Level 3
  • 607 Views
  • 1 replies
  • 0 Helpful votes

Hello everyone, i'm working on a case and maybe someone is able to give me suggestions.  There is a Mail coming from Exchange Online via Connector to Exchange OnPrem and from there sent to ESA. The Message has a 550 Failure with status fail/bodyhash_...

I just updated to 15.0.0 build 104 and I am getting the error:ISQ: db.init() failed. Retry after short pause.and the quarantine services are not starting. Might be related but I am also getting :The operating system partition is at 93% capacity Unsur...

kpetrozzi by Level 1
  • 2193 Views
  • 4 replies
  • 0 Helpful votes

Hi,I'm looking for a way to add the domain to the external tag of an incoming external mail, but I'm having a hard time figuring out how to do this. Has anyone tried this already and have an idea how this can be done via message filters (preferred) o...

Andrei V by Level 1
  • 428 Views
  • 1 replies
  • 0 Helpful votes