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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.

 

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Migrate from Secure Email Virtual C100V to Avoid McAfee-Related Issues

  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
  • 772 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Senderbase down issue

Hi,I seem to be having problems with one of our ironport clusters which is displaying 'senderbase down'. We have other ironport clusters on different sites that are displaying senderbase is up and running so i'm trying to diagnose why this site cant ...

drbenno82 by • Level 1
  • 3807 Views
  • 1 replies
  • 0 Helpful votes

Iron Port C150 - where to see for how many users (mailboxes) a device is licensed?

I'm Cisco partner and I have to sell a subcription for C150 Email Security Appliance to a Client. Client's device says "Your "IronPort Anti-Spam" key will expire in under 60 day(s).  Please contact your authorized IronPort sales representative." The ...

Resolved! Message stuck in "queue"

Good Morning,I have a message that appears to be "stuck" in queue.  I don't believe that the message is still actually in the queue according to the Message Tracking.  When I attempt to use "removemessage" or "bouncemessage", both show that the messa...

Resolved! No data was found ... in Outgoing Senders

Hi, Our ironports work as a relayhosts for local hosts and only send emails to the outside world.We've got configured only one listener of type = private. Almost all emails hits  "Relayed" flow policy.We've many hosts and we send emails from many dom...

FREE ESA Training Session 9/22

The ESA Content Security team is happy to announce our upcoming Live Virtual training session for our Email Security Appliance. Date: September 22, 2014 Time: 10:00 AM - 5:00 PM ESTLocation: Live via WebexObjective: To provide ESA administrators with...

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