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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
  • 357 Views
  • 2 replies
  • 0 Helpful votes

Email Help

Looking for some help please.   I have a customer who is using C170 ESA and recently we had a mail with malicious content that usual is blocked, but got through.   Then I sent the mail myself from a test account with the same content and it was corre...

Enquire for command usage

Hello,   I would like to some enquire about below commands for daily operation. Command: repengstatus Command: sbsstatus   I would like to know as:- 1) How old does the engine need to be in order to determine for the update or verify the process on t...

Filters Ironport "rcpt-to =="

Hi guys, It is necessary for a certain destination to only allow the entry of messages that come from a limited list of senders. Contact_example: if (rcpt-to == "(? I) contact @ example \\. Net") AND (mail-from-dictionary-match ("example_Dict", 1)) {...

sgarayes by • Level 1
  • 1789 Views
  • 1 replies
  • 0 Helpful votes

Resolved! ESA NTLM v2 compatability

HI Team,   I would like to have confirmation that is there is compatibility issue with NTLMv2 on Cisco IronPort ESA and my i have any configuration guide or steps for the same.   I believe NTLM configuration is more in WSA than ESA. So i just wanted ...

prparava by • Cisco Employee
  • 1704 Views
  • 1 replies
  • 0 Helpful votes

not completely scanned by URL Scanning Service. Error: Request failed with code: 35 (error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number).

Email users received spam email, directly to the inbox, iron port URL scanning display the below message 06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 0...

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