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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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Has anyone upgraded the Ironport ESA to 8.5.6-074 and had the issues of Raid status showing unknown?

Has anyone upgraded the Ironport ESA to 8.5.6-074 and had the issues of Raid status showing unknown? After we upgraded our appliances we are having issues with our ESA appliances showing the RAID status as unknown. When we reported the issue to CISCO...

TLS v1.2?

When is Cisco planning on moving to TLSv1.2 (released in 2008)? Now that CVE-2014-3566 has made SSLv3 unusable, a major flaw in TLSv1.0 will leave customers with nothing. TLSv1.0 was released in 1999. Other things released in 1999: RIM Blackberry, 80...

Bob Fayne by • Level 1
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  • 0 Helpful votes

Resolved! Redirect the ironport queue in the event of internet connection failed

HI all,We have one ironport internet connection failed and due to that It is not able to deliver the mail outbound to remote domains. We have suspended the listener for that ironport and also redirected all the mails with redirectrecipients command. ...

[CVE-2014-3566] SSL Padding Oracle On Downgraded Legacy Encryption (POODLE) Vulnerability

Cisco is aware of the reported vulnerability and is currently investigating this report.  Cisco is evaluating products to determine their exposure to this vulnerability.Cisco has issued an official PSIRT notice for the SSL Padding Oracle On Downgrade...

Resolved! Spam passed by Ironport.

Hello,We are using Ironport to scan email to our environment, but the last weeks we receive a lot of spam.  When we check the original sender ip at MXToolbox.com, this ip address is listed, but at Senderbase.org the ip address is not listed. Is it po...

Resolved! C100V - The updater has been unable to communicate with the update server for at least 1h.

Hi,As of 01:41 BST today (02/10/2014) I have been receiving hourly alerts from my C100V with the message "The updater has been unable to communicate with the update server for at least 1h.". When going to the Systems Upgrade page and clicking "Upgrad...

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