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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

  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
  • 880 Views
  • 2 replies
  • 0 Helpful votes

SPF

Hi CISCO Community  I can not understand what is means in email header : SPF: helo identity postmaster@[127.0.1.1] NonePlease explain!  

Hi, We plan to install new ESAv/SMAv and from the Release Notes (https://www.cisco.com/c/dam/en/us/td/docs/security/content_security/virtual_appliances/Cisco_Content_Security_Virtual_Appliance_Install_Guide.pdf) it is said that we can add more RAM to...

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REJR77 by Level 1
  • 2595 Views
  • 5 replies
  • 0 Helpful votes

Hello all, We're phasing out our two Cisco Ironport C170's due to End of life status and upgradability on the hardware. We've been extremely happy with them, and they sit in our colo in front of a couple of on-prem mail servers. They've been great. I...

Hi All, Requirement : How can mail traffic locally on the exchange server on premise, can be directed to cisco esa As per the customer requirement we had provided them with ESA Virtual Appliance C100V.Now the ESA can filtered incoming mail from the i...

Scenario to Cisco.jpg
rynrjn93 by Level 1
  • 2938 Views
  • 5 replies
  • 5 Helpful votes

We upgraded IronPort to 14.0 and since then we can't connect via SSH. Getting below error.Notificationupdate is not in the permissions dictionary in the config file system.users/data.cfg please reupdate your configuration files only GUI works - any s...