Buy or Renew
Buy or Renew

Email Security

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation

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

Start a conversation

database reputation ironport

Hi Guys,I have an issue with my CISCO Ironport.Most of domains are categorized like Uknown.The default behaviour for uknown domains is the drop all messages.Now I have changed this behaviour for unknown domains, but can you help me to understand how ...

IronPort Bounce notifications

So...we have Symantec DLP running.  When a user sends an email that contains data blocked by a Symantec DLP policy they get an email from DLP saying their email was blocked.  They also get an undeliverable from our Exchange environment saying ironpor...

Searching/Parsing Mail_logs

Hello,I am looking to do some logfile parsing for attachment tracking from CLI, and I have a few questions. Here is what I would like to do:Since this device is 'nix based, I assume its got CRON for scheduling tasks. I'd like to write a script to run...

ESA Integration With SMA M170

 Hi All, I have to deploy SMA M170 for one of customer who is already using 2 * WSA and 2 * ESA appliances. So could you please guide me, if there will any downtime for WSA and ESA services if I add them into SMA ?After addition of WSA and ESA with S...

rmujeeb81 by • Level 1
  • 2757 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Cisco Ironport C170 - General question...

Hello. We are receiving the following Thread in an E-mail Alert from our Ironport(message continued after Thread text):-----------From: IronPort C170 AlertSent: Monday, January 05, 2015 12:02:25 AM (UTC-06:00) Central Time (US & Canada)To: xxxxxxxxxx...

qquineypp by • Level 1
  • 2326 Views
  • 4 replies
  • 0 Helpful votes
Load more