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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
  • 836 Views
  • 2 replies
  • 0 Helpful votes

Help understanding ironport email flow report

Hellotrying to understand the mail flow looking to ironport quaranteen report:who sent this emailwhere was going and how was ended up in ironport quaranteen. Particualrry i am wondering if user's computer is infected with some malware programs.Many t...

endpoint by • Level 1
  • 9445 Views
  • 2 replies
  • 0 Helpful votes

Initial setup of M670

I'm going thru the initial install of the M670 for the first time and during the config it's only giving methe option to connect it to our network using the management port even though I have a cable pluggedin to the Data 1 port that is active with a...

Emails Ending up in the Spam Quarantine

HelloI have an Ironport C170 and I would like to know how to stop emails from certain domains from ending up in the Spam Quarantine? I have gone into the HAT overview and added these domains to the Whitelist, Unknown list and All list. All of these l...

Resolved! Ironport Licensing options

                   Hello Forum Team!   Can licenses types be mixed on the same Ironport? For example, if the client already has a number of ESA-ESI-LIC= licensed users and needs to add additional users, can the new additional licenses be ESA-ESP-LIC=...

fuhrersk8 by • Level 3
  • 2303 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Delete Configuration Files

Hi !Following this thread (https://supportforums.cisco.com/thread/2066895), I establish a daily automatic backup of my configuration file to a remote server (via SSH and SCP).My problem is the following : How can I delete sent files ont my ESA applia...

Resolved! message tracking log - time period

Hi,How long are message tracking logs keeped on appliance?How can i control message tracking logs. Lots of HDD space available and I want 3 months of available Message Tracking logs.When are Message traking logs deleted from the appliance?

Juraj Ban by • Level 1
  • 6474 Views
  • 5 replies
  • 0 Helpful votes

Resolved! IMAP Through IronPort ESA

Hi Guys,I'm planning to deploy IMAP Client Access service on microsoft exchange 2010 (HUB/CAS transport server) for Remote Users (MUA's) through EmailSecurity Appliance C160 which was already been configured for normal SMTP incoming/outgoing mail tra...

M.Jallad by • Level 1
  • 4502 Views
  • 5 replies
  • 0 Helpful votes

Moving Data Centre

                   Due to a planned closure of a data centre we are having to relocate one of our Ironport C370 Servers.  This is one of two servers within a cluster.  The second server is within a different data centre and therefore not affected.  T...

elliott81 by • Level 1
  • 1088 Views
  • 2 replies
  • 0 Helpful votes

Backup (single) SMA data

Hi !I'm implementing an ironport architecture with 2 ESA C-370 and 1 SMA M-670, with centralized message tracking (and reporting) on the SMA, and I would like to know a way to backup my SMA data and restore it after crash.I saw in the user guide that...

How to use the fetch manifest page?

Hey guys, I'm trying to do a manual upgrade here and I need to download the image.Process is pretty clear that you have to go through http://updates.ironport.com/fetch_manifest.html and enter the serial number and the release version. But when I do t...

nivon by • Level 1
  • 1617 Views
  • 1 replies
  • 0 Helpful votes
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