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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
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HI, When I try to download a zip file using Cisco SMA, I can not download it, and I see this comment: Malware Analytics File Verdict: .   ( It seems It can not analyze that file) The Default Polciy is been used, and the MIME Objetct section, ZIP file...

ajrob69 by Frequent Visitor
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I have a virtual ESA appliance setup and I need to license it. I requested a 45-day demo license for it. However, when I tried to attach the license to my virtual ESA appliance it gives the error "Could not load the license file in the appliance beca...

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We are listed as good with all other spam services but talos.   We got listed monday we found the problem user fixed it, provided talos with logs of all of this monday and the ticket is still listed as poor.  I can't get ahold of anyone at talos and ...

Hello all, currently i faced an issue that seems that some mails from yahoo are not possible to deliver. Problem 1- in the mail header there is no information why it could not be delivered. Problem 2 - i couldnt find anything in mail_logs from my tes...

Hello, is it possible to use Licence:Cisco Secure Email XaaS SubscriptionCSEMAIL-SEC-SUBwith a a physical onsite Gateway C195 devices?GOAL using this subscription:IronPort Anti-SpamSophos Anti-VirusOld Manufactorer P/N was :ESA-ESI-LICEMAIL-SEC-SUBTh...

Hi Dear SupportIs there any Training Videos by Cisco Professionals about AsyncOS 16 new features in ESA? I will appreciated for your valued response . By the way, i read AsyncOS 16 Release Notes PDF and Web Based User Guide about this release in the ...

jnourbakhsh by Frequent Visitor
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