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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
  • 1573 Views
  • 2 replies
  • 0 Helpful votes

Hello Gurus  I am new to cisco email security appliance , Hence looking for expert opinion. Due to COVAD-19, I assume companies are seeing large number of SPAM attack. I would like to know what you expert are searching in order to filter out maliciou...

TheRock by Community Member
  • 1829 Views
  • 0 replies
  • 0 Helpful votes

I need to find all emails containing an attachment (.doc) received by the organization in the last 30 days.I have already tried to run the GUI on the SMA, but a max it returns if 1000 entries and we have more than 1000.Hence is there a backend query ...

hdsouza by Community Member
  • 1702 Views
  • 4 replies
  • 0 Helpful votes

Hi to all, Is there is a rate limit which allows to limit the maximum number of recipients per hour from host and from envelope sender and a way to limit the number of messages instead of the number of recipients?We want to avoid a faulty application...

Is there a way to submit suspect messages to Cisco directly from IronPort? It can be difficult to get a copy of a suspect message for submitting to the various e-mail addresses, and it would be a lot more efficient if we could just submit from IronPo...

Hi,is it possible to create LDAP Accept queries that contain exceptions? Something like "accept if email address is valid, except if address is in group XYZ".We need to reject certain recipients. They are too many to put them in the RAT and we can't ...