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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
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Resolved! Ironport C170 HELO/EHLO response

Hello all! I would like to know if someone can tell me where I can update the HELO/EHLO response that the Ironport sends out when mail is flowing outbound from it. Currently the configuration is Exchange 2010 using the Ironport as its smarthost. When...

Zbot trojan allowed through?

Hi,We're running 7.5.1-028 on X1070 appliances and we're using the Sophos A/V engine. We have Sopho engine 3.2.07.378_4.90 of 04 Sep 13, and IDE rules 2013090806 of 08 Sep 13.For the past week or so we've seen a significant number of messages get thr...

Detecting the mail ID in wrong format

Hi All,If someone is sending the mail to internal users, some time it reaches the receipent and some time it is dropping at ironport.when I gone through the logs for the same, i have found some strange thing like below."Envelope Sender: suggest=webse...

Resolved! Outlook Plugin 7.3 and Java issues

The Plug-in admin guide says Jave 1.6 or higher is required. We have Java 1.7 update 25  which is the latest one , the plugin still installs the 1.6. Any reason why it does not just accept 1.7 already installed?This will be problematic for us in roll...

Cluster ISSUE C160

Kindly find below error massage I got each time I try to join second Iron port appliance to FANR clusterEnter password:Failed to join the cluster.Error was: 'You are not authorized to login.'Enter the IP address of a machine in the cluster.Note : I t...

Work queue paused

Hello,I am receiving a lot of alerts that says:The Critical message is:work queue paused, 827 msgs, antispamI see in the webUI > overview, that the workqueue has a lot of messages. The customer is reporting that the mails are not arriving, what can i...

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