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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
  • 1500 Views
  • 2 replies
  • 0 Helpful votes

not completely scanned by URL Scanning Service. Error: Request failed with code: 35 (error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number).

Email users received spam email, directly to the inbox, iron port URL scanning display the below message 06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 06:55:15 (GMT -05:00)06 Feb 2019 0...

Email Desclaimer on ESA

I have worked on the configuration of ESA to add a disclaimer on all inbound email that states the following:   [CAUTION] This email originated from outside of the exemple.com domain. Do not click on any links or open any attachments unless you t...

lm20ele by • Level 3
  • 1394 Views
  • 1 replies
  • 0 Helpful votes

Messages are not encrypting in Outlook 365

We are finding that in Outlook (Office 365) we install the plugin, verify the encrypt button works and send an encrypted message although the recipient is getting the message completely UNENCRYPTED. Is this a known issue? Is there a different pluging...

dfiore by • Community Member
  • 1374 Views
  • 2 replies
  • 0 Helpful votes

CES o365 license

Supposing that just Office 365 premium protection will be used, does the L-CES-O365P-1Y-S2 license is enough to protect Office365 email for 400 users? or is it necessary some additional license? Thank you in advanceCES

fcout by • Visitor
  • 2212 Views
  • 1 replies
  • 0 Helpful votes

Resolved! Csico DLP

Dear all,We are working with Cisco Email and web-security appliances and we are in the process to implement a DLP solution as part of our security portfolio.Thus, we are wondering what can Cisco offer in this regard and whether we can use the current...

learnsec by • Level 5
  • 3017 Views
  • 4 replies
  • 0 Helpful votes

Cloud AMP for Email integration with On-Premise Cisco Iron port email solution

Hi Team,   I faced these questions during one of the presales calls. Need your views on the following queries.   1. one of the clients has an on-prem Iron port email solution, now they want to integrate this solution with cloud based AMP for email. I...

nirmal.joshi by • Frequent Visitor
  • 1450 Views
  • 1 replies
  • 0 Helpful votes

Resolved! WSA - SMA data synchronization

Hello!   I use SMA and WSA appliances. If the connection goes down between the WSA and SMA what is happening with the WSA reports and tracking events? Are these events synchronized to the SMA after the connection repaired?   Thanks! Zoltan

Cisco ESA Email Masquerading Question

In working with a customer, their design uses a pair of C690 ESA appliances with an interface for the DMZ and one internally in a global pool.  They only would like external bound email to be masqueraded and all other internal domains will be routed ...

jbilder93 by • Community Member
  • 2579 Views
  • 0 replies
  • 0 Helpful votes

Resolved! Enterprise Security Appliance - Does HAT Whitelist support use of IP address with subnet mask?

HiWe have an external mail provider using multiple servers to send mail on-behalf of our org. Instead of entering multiple entries into the whitelist, i would like to just add the domain part of the ip with /24 subnet mask. is this supported?? Ta Fra...

Fwaggle by • Community Member
  • 1605 Views
  • 2 replies
  • 0 Helpful votes

Systemsetup

Hi Guys,   We have an Ironport hardware device and we would like to migrate to a VMware Virtual appliance. I have downloaded version 11.0.0.227. I have logged into the CLI on on the Ironport VM and i am trying to run the network setup using the "syst...

ciscoadminbw by • Frequent Visitor
  • 1756 Views
  • 5 replies
  • 0 Helpful votes
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