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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 workloa...

dmccabej by Cisco Employee
  • 1657 Views
  • 2 replies
  • 0 Helpful votes

My company wants to provide a way for external users to send secure mail to us. My understanding is that the IronPort Secure E-mail solution is only for Outgoing mail, is that true?If so, what are some of the solutions that we could/should evaluate?T...

Our C 600 hasn't been updated in a while because of job reasons. So we updated to version 5.5.1 - 019 of Async OS on the 28th. We also use Whats Up Gold to monitor our network devices. After the update process, now the SMTP service on the Ironport is...

I've created anti-virus and anti-spam syslog pushed to a log analyzer. I've checked the log analyzer and found IronPort can successfully collect syslog from IronPort. But sometimes I receive an alert from IronPort below. What's the problem? It seems ...

:oops: The Ironport like no response , it need 5 minutes more to response when i enter any command in Ironport command line . it like hang up .And I also need to waiting for a long time when i login the Ironport web GUI. I also found the System statu...

sam_ironport by Community Member
  • 2819 Views
  • 2 replies
  • 0 Helpful votes

I have a doubt,I tried a lot how to find a way to solve this "problem":Basically, there is a necessity of copying(or quarantine e.g.) all inbound messages that uses the header BCC (Blinded Copy Carbon).The problem is that the log shows: Mon May 26 22...

Before we upgraded to 5.5 we were using apireport.pl to get hold of the raw data behind the incoming mail graph overview (export data). The script ran just before mid-night on the last day of the month to collect the current month's statistics. I thi...

mark_fox_csd by Community Member
  • 1380 Views
  • 2 replies
  • 0 Helpful votes

Hi Everyone,First off, I want to mention what a great community you have here. We've had our appliance for a month now, and all the configuration questions we had so far were easily found in this forum. With that said, I was wondering if someone can ...

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