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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
  • 903 Views
  • 2 replies
  • 0 Helpful votes

Hello   I have lab at home. Basic home router and then I am using Hyper V on windows to run virtual esa c000v.  In Hyper V machine I am using the default virtual adapter (vEthernet) which again does NAT and provide network access to virtual machine. ...

Hello,   I'm attempting to validate an incoming content filter using the Trace function before committing the changes to the ESA, however, it appears that it doesn't actually evaluate the country code from the IP address given. However, if I commit t...

2018-04-19_9-38-16.png trace01.png trace02.png
joelbland by Level 1
  • 2005 Views
  • 2 replies
  • 0 Helpful votes

Hi, We are using smart identifier with content filter to scan the incoming emails for credit card information. However, there are several false-positives and looking at DLP for the same. Is DLP supported on incoming policies? We are using ESA C670 on...

Pravar by Level 1
  • 1466 Views
  • 1 replies
  • 0 Helpful votes

Two weeks ago I have sent some HAM-emails to the portal.I can see 8 Actionable Submissions But since 2 weeks I don´t see any status changes. What is happening with these emails?The Status ist always the same. "8 Number of Actionable Submissions" How ...

mewi by Level 1
  • 2132 Views
  • 2 replies
  • 0 Helpful votes

hi I lost the admin account password for the ESA C680 device.   I found a way to change and reset the admin account password by losing the admin account password while I was conducting the POC to the customer.   https://www.cisco.com/c/en/us/support/...