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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
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  • 2 replies
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The Warning message is: The query Domino_LDAP.accept failed with result inquiry timed out Last message occurred 5134 times between Tue Jul 11 17:35:43 2017 and Tue Jul 11 18:35:41 2017. Version: 9.7.1-066 Could you please let me know what it mean and...

pbabu6001 by Level 3
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Hello, when I see a report about incoming mail there is a match on Stopped by Reputation Filtering  although it is listed down as a white list  Last Sender Group: WHITELIST DNS Verified: Yes and this hostname is listed in Whitelist but assigned profi...

Hi is there a possibility to prevent Cisco ESA sending Bounce Messages if a recipient is not available over a longer period of time? we use a BCC filter rule to duplicate alle incoming e-mails and check them on a third party malware engine. the origi...

Is there any tool that will parse the backup of an ironport device ( .xml) and convert it into a morereadable format? Was looking to get the configurations documented for the appliance from the xml files created by the config backup. Or if there is a...

Hi All, I am new to the ESA. I want to drop all email coming from outside using my domain i.e forged email. I am using content filer but found only quarantine option not drop option. Please help me on this. Regards, Uzair Hussain

We're in the process of converting over our physical 'Ironport' appliances to the new virtual ESA builds. On the old Ironports we have two units - they are not clustered and from what I can tell they enabled the spam quarantine on the secondary and o...

Dan Reid by Community Member
  • 3205 Views
  • 8 replies
  • 0 Helpful votes

Dear all,  Please help me to understand the purpose of this license in Cisco Email Security Appliance ?  CCS-MESSAGING-LIC Cisco Content Security Messaging License I had checked with licensing guide but cannot find any information about this license....

Hi All I got a message " The unrard was restarted due to an error. A debug file was generated for troubleshooting. Please contact your authorized support center." I found a bug is talk about that, the Bug ID is CSCuw65147. I want to know this problem...

lenny liu by Visitor
  • 1973 Views
  • 1 replies
  • 0 Helpful votes