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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
  • 876 Views
  • 2 replies
  • 0 Helpful votes

Blocked malware using amp notification

HI All,Need to enable notification to sender when anything like (attachment, link) gets blocked by Amp service. Below is the task i have to performed.https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/118796-technote-esa-00....

sv7 by • Level 3
  • 693 Views
  • 2 replies
  • 0 Helpful votes

Resolved! SNI support on ESA

Hi all,I am attempting to integrate a 3rd party encryption service with Cisco ESA.The expected mail flow route is 365 -> ESA -> encryption server -> ESA -> final delivery.My encryption server requires SMTP Auth, SNI and SSL/TLS.I have a TLS enforced ...

LDAP Query - One leg deployment

Hello, I'm currently working with a ESA 14.2 that has a one leg deployment and I'm looking to configure LDAP. Is there a way to set it up such that it can accept queries without having to create an additional listener? Any guidance, references, or su...

llomjaria by • Level 1
  • 899 Views
  • 6 replies
  • 0 Helpful votes

Resolved! Reporting on fail for delivery mails

Hi,I want to make reporting on fail delivered mail from one particular adress in my company.I have checked "Schedule Reports" possibility but it seems there is no way to get hard bounce mail number reporting on one particular adrees.Regards,Guillaume

sysresuem by • Level 1
  • 1070 Views
  • 4 replies
  • 0 Helpful votes

Upgrading ESA & SMA on version AsyncOS 15

Anyone has upgraded their SMA and ESA to version 15 (limited deployment)? If yes, is there any current issue you faced after upgraded to version 15? is it recommended to upgrade to version 15 or should i wait for stable version to release?

john21 by • Level 1
  • 919 Views
  • 1 replies
  • 0 Helpful votes
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