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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
  • 1516 Views
  • 2 replies
  • 0 Helpful votes

Cisco Secure Add-in modification to report suspicious emails.I have downloaded the Add-in Software Download - Cisco Systems.Does it possible to remove the "Cisco Talos portal" link as screenshotted because end-users aren't this and it's confusing the...

vinayp by Frequent Visitor
  • 554 Views
  • 0 replies
  • 0 Helpful votes

Hello,please I have a problem with pvo quantines , I have a cluster of ESA composed by 2 ESAv , I add these 2 ESAv to SMA , connection is established, but when I launch setup wizard of migration in SMA , it finished successfully but there is no thing...

HiI wish that you are doing wellPlease I have in my network 2 domains each one with his MX , and I have one esa , my problem is that mails that are sent from domain 1 are considered incoming ?

Hello, We receive more and more pdf files as attachement that are "signed" with a certificate (Adobe certificate).The ESA found this file as ENCRYPTED with the AV engine. But we found that they are not really encrypted (just signed) and can be opened...

REJR77 by Level 5
  • 2208 Views
  • 2 replies
  • 6 Helpful votes

Hy I have a problem with url filtering when I run telnet command here is what i got telnet v2.sds.cisco.com 443Trying 146.112.255.69...Connected to 146.112.255.69.Escape character is '^]'.^]HTTP/1.1 400 Bad RequestServer: openresty/1.19.9.1Date: Sat,...

Hi there, we use two VM of ESA in a cluster. Until now we have used test licenses and now bought real ones. In the xml file is written that the clustering license is expiring after two days( the day which was set on the test licenses).I have register...

I need to know when TALCO marked this HASH as Malicious  SHA256 656B890CCF01CB256326A27B0C4979C80811BD765489CC8D9ADCB581B40DABFF As the ESA records for AMP had it at an low risk  TALCO does not give a time 

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