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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

So I'm trying to use the Help > Open Support Ticket option while logged into the GUI on our C160. When I do this, I get this error:Restricted to Login Host:None of the modes in the drop box above it appear to be the mode it wants. Where is this mode?...

ashaw216 by Level 1
  • 1820 Views
  • 2 replies
  • 0 Helpful votes

No matter what config I use I am able to apply sender domains, anti spam and anti virus however I can only apply a single process of content filter which then will not move to the next process of DLP.  Can this be achieved so I can have within the sa...

Bighead81 by Level 1
  • 1001 Views
  • 1 replies
  • 0 Helpful votes

Is there a way to get email SLA reports out of the Ironport M-series appliances? Ideally we would like to report on % of emails delivered within x mins. % delivered outside of SLA etc Is this data available in the normal reporting function on the ...

We have a Cisco ASA 5505 that works great but employees on the outside of the office using Microsoft exchange to get emails on their cell phones or laptops when they go to mail.xxxxxxxx.com it show up that the server is not there.Any help would be gr...

Hello Folks. We have an Ironport C370 and we couldn't log in to it anymore (GUI or SSH) using our domain password. It sends an e-mail showing "LDAP:query Server Name-AD accep result LDAP server misconfigured or unreachable"Nothing has been changed in...

I have been giving this regex code but for cannot decipher what it means"(?¡)\\[Abcde\\].*" Has been applied to outgoing mail policy - conditions as a subject header - contains. Any ideas.

Bighead81 by Level 1
  • 814 Views
  • 1 replies
  • 0 Helpful votes