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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
  • 1511 Views
  • 2 replies
  • 0 Helpful votes

spam safelist for distribution list

I have a user that wants to create a safelist for email that regularly goes to a distribution list.  The user will get a notice that the email has been caught in the spam filter, can releast the email but is not able to set a safelist for the address...

Resolved! Extracting e-mails from quarantine

Hello,I was asked to perform a migration of part of our current solutions to IronPort. Some procedures we follow requires extracting and analysis of e-mail in IronPort quarantines. However, I'm unable to find any solution for that. We can't just rele...

Having more than one default Policy

Having more than one default Policy Hi, I was hoping someone could lend me a hand to what I am hoping is a fairly simple piece of advice,(I have inherrited an Ironport Mail filtering device due to staffing issues) - Ironport C160 7.1.2-020We have a d...

jon.marshall by • Community Member
  • 1369 Views
  • 1 replies
  • 0 Helpful votes

Resolved! Email Security Plug-in

Can someone tell me where I can download the current version Email Security Plug-in for Outlook? I have a C150 and if you search on the download page this appliance does not come up.  I can see the download for the C170 appliance but because I have a...

jheadley by • Level 1
  • 2049 Views
  • 3 replies
  • 0 Helpful votes

Update TLS certificate

Hi,I am about to upgrade the TLS certificate on my two appliance C360s with AsyncOS 7.1.5-017. This seem to be very bad dokumented, or I am blind.Questions:Is it recommended that I use the import or update feature?If I can use the update feature, do ...

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