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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
  • 466 Views
  • 2 replies
  • 0 Helpful votes

Hi Guys, Has anybody encountered the same issue. I have one client which not receiving email from us and getting bounced. Interestingly not all emails are bouncing. I have this one mailbox which they are able to received emails and the rest were bou...

Two C380 ESA, Cluster One of the ESA send a warning message Is it a hardware failure or something? // <![CDATA[ var h_PageUnid="A7A51C2BD4EFAF69482572F7003942B6",h_PDCheck='<a href="/">x</a>',CcE=[4,1,1,1,1,1,0,1,1], haiku={aCompressible:'1,1,1,1...

What happens to ESA Message Data and mail marked for the quarantine  when using an Content Security management Appliance and this SMA goes temporary down. Will this data stay on the ESA until the SMA returned and automatically send to the SMA after i...

Can someone explain what MGA is? I searched the manuals, forums, and internet for what it is and couldn't find it. I must be the only person that doesn't know what it is. :cry: Thanks IRONPORT Nation!

Of late, customers reporting an up-tick in the following alert:The Warning message is: The File Reputation service is not reachable. Version: 9.6.0-042Serial Number: 000084FA6CC1CCF1111-000069E31111Timestamp: 31 Aug 2015 17:31:45 +0000 This is being ...

Hi, Greetings!! I would like to find message logs by using couple of measures (IP and email address), can you please suggest. I am able to find email logs with only one measure with particular email address or IP address. For example: Wed Oct 19 18:...

pbabu6001 by Level 1
  • 7796 Views
  • 5 replies
  • 0 Helpful votes

Hi !We are getting this bounce error message from our customers trying to send emails to our newly built C370 Ironport box.Here is the error message; "The following message to nilesh.prasad@mitchelkeil.com.fj was undeliverable.The reason for the prob...

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