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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 worklo...

dmccabej by Cisco Employee
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http://www.marketwire.com/mw/release_html_b1?release_id=211790Anyone know of any enhancements other than beefier hardware?Also, is anyone at RSA this week? I changed jobs and wasn't able to go. I'll be in San Jose next week, though, in training for m...

Judging from the complete lack of any mention of the term "IPsec" in both the product manuals and the Knowledge Base, I think it's pretty safe to say that AsyncOS has no IPsec support. Might any of the IronPort folks here care to comment on if/when t...

hi,in our organization (italian ISP) we have ten ironport appliance for relay service of our customers.In last weeks we are receiving a lot of spam from clients probably infected by worms.These messages are not blocked from IPAS.The bodies, senders, ...

I would like to apply a message filter to filter emails with no sender address. No_sender_filter:if(mail-from="^$"){ quarantine("Policy");}After I applied the filters above, I found that there are many valid bounced mail in Policy quarantine. How ...