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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

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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
  • 1551 Views
  • 2 replies
  • 0 Helpful votes

Resolved! ESA does not extract ACE Archives

Hello, last week we received a wave of email with ACE archives. This archives contained a malicious EXE file. Only the ACE files was scanned by AMP but the archive was not extracted to scan the content. As far as I know, archives should be extracted ...

Access logs issue for long time session

Hi,I noticed that in my access logs, some entries have a very high value in the "time-taken" field (several days or weeks). That means I only see the logs concerning these connections after a very long time as log entries is written when session is c...

Laloutre by • Frequent Visitor
  • 1239 Views
  • 1 replies
  • 0 Helpful votes

How does SMA send alerts

Hi I have seen few discussions about this topic, but all remain unanswered. How does SMA/ESA/WSA send alert emails? When we type "alertconfig"it allows us to configure the "FROM" address and the mail recipients that will be receiving the alerts and a...

Resolved! Message Tracking URL tab

With our old appliances, C370 build 11.0.0-267, we had a URL details tab inside of message tracking. Screenshot included. This showed up for any messages grabbed by our Malicious URL filter. On our new appliances, C390 build 11.0.1-027, this tab is n...

Resolved! Is AsyncOs 11 fully stable for C190?

Has there been any updates on how stable version 11.0.1-027 release is for C190?   I remember version 11 not being available for C190 until a couple of months ago (based on a previous post), but even then the hot patch released did not fully fix the ...

DataBland by • Level 2
  • 2181 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Help! Content filter with Dictionary checking

By default, my company will block all mail from gmail.com, yahoo.com & hotmail.com. I have created 2 dictionaries for this issue: 1) Exceptional email address list which allowed to send mail to us. 2) VIP list who can receive email from these 3 domai...

Kit1 by • Community Member
  • 3045 Views
  • 1 replies
  • 0 Helpful votes

MID xxxxxxx cannot be scanned by CASE. The message is either malformed or CASE is unable to process it at the moment.

Getting lots of critical error since 14 Dec 2017 from several of our Ironport ESAV appliances:   Critical: MID xxxxxxx cannot be scanned by CASE. The message is either malformed or CASE is unable to process it at the moment.   ESAV appliances are C30...

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