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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
  • 1500 Views
  • 2 replies
  • 0 Helpful votes

Maximum value for "limit" in message-tracking API. Is it configurable?

I am using message-tracking API call to get messages from Cisco Email gateway. "limit" parameter isn't allowing value more than 100 ("Invalid value for attribute - limit. limit should be from 1 - 100.) is returned for value more than 100.Is this limi...

Shah Tanveer by • Frequent Visitor
  • 1366 Views
  • 4 replies
  • 0 Helpful votes

Cisco Secure Email gateway tracking API

Hello,I have configured Secure email gateway, configured Local Tracking for Email message tracking. When we use  message-tracking API to get the email messages, API gradually taking more time when index increases. eg: for messages 1-100 it is taking ...

Resolved! ESA/ SMA smart license conversion

Hello, We have some ESAv and SMAv running with legacy PAK licenses. Looks that from version post 15.0 it will be mandatory to use Smart Licences with ESA / SMA. How can we convert PAK for these VM to Smart License? Does this require to open a case at...

REJR77 by • Level 5
  • 1892 Views
  • 2 replies
  • 0 Helpful votes
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