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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.

 

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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
  • 903 Views
  • 2 replies
  • 0 Helpful votes

Ironport ESA Physical-toVirtual Migration

Let me preface with - I'm fairly new to the world of IronPorts and thanks for your help.   I'm going to migrate a set of 4 ESAs (an inbound/outbound located at two different data centers) and the one SMA appliance all to VMware.     I found this: htt...

zsmithtek by • Level 1
  • 2763 Views
  • 4 replies
  • 0 Helpful votes

Resolved! vESA URL Filtering

Hello,   I just configured URL Filtering according to this guide   I created a rule like this: Condition: url-reputation(-10.00, -6.00 , "Whitelist_Bad_URLs", 1, 1) Actions: log-entry("<===> BAD URL! <===>")notify("$EnvelopeRecipients", "Mail was qua...

pwe by • Level 1
  • 2508 Views
  • 3 replies
  • 0 Helpful votes

Tracking of domainmap rewrite

Good Morning, We have a configuration in the listenerconfig for domain mapping that rewrites anything from "subdomain.domain.com" to "domain.com".  We are working towards decommissioning the subdomain but would like to know how many emails are coming...

Message tracking display and reporting

Hi, I am newish to the email appliance. We have a c370. I am told we need reports daily detailing each email address leaving the ironport each day. If we could also see the sending address that would be great. message tracking seems to have this info...

Any news on an update to Cisco IronPort Email Security Plug-in(Outlook) for Windows Server 2008 R2 or Windows Server 2012 R2 for RDSH Users?

Is there a roadmap as to when Cisco IronPort Email Security Plug-In (Outlook) will be compatible with current Windows Server operating systems for RDSH (Terminal Server) sessions?Cisco IronPort E-mail Security Plug-in (Outlook) 7.4.0.254 from 2014-11...

Resolved! Problems sending to Gmail

Good Afternoon, We are currently using Cloud ESA.  We were made aware of an issue with users attempting to send emails to Gmail.com that are being queued by the following message:   (DCID 4525300) Message 5384539 to ***************@gmail.com delayed....

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