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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
  • 1500 Views
  • 2 replies
  • 0 Helpful votes

Hello, I have a end-user recently migrated from on-prem ESA C170 to CES. and have noticed alerts under System Administration is not available on CES GUI. I would like to know if there's a similar feature on CES where it can send alert emails to the a...

Weiwen_17 by Level 1
  • 2035 Views
  • 1 replies
  • 10 Helpful votes

Does the below syntax is correct? My requirement is that sending domain is example.com and DMARC authentication passes and the email sent one of the 4 IPs. Can I use | between the IPs, instead of using OR condition ? Any ideas. Thanks in advance. Mes...

Hello, we get a lot of advertising email and also regular info-email where the sender typically is 'bounces+xxxxx-firstname-lastname=domain.com@somedomain.com. The sender address '..firstname.lastname..' is a legit person in our organization. For the...

bvj197222 by Level 5
  • 7818 Views
  • 1 replies
  • 5 Helpful votes

Resolved! DLP policies

Good Day  Please advise , how can I export list of outbound DLP policies for the domain (Outbound) on Cisco ESA

Tumi by Frequent Visitor
  • 1707 Views
  • 1 replies
  • 5 Helpful votes
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