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:
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.
Hello All
I need to create an Ironport ESA Cluster.
I have two Virtual Appliance.
A-
Product: Cisco C300V Email Security Virtual ApplianceModel: C300VVersion: 9.7.0-125Build Date: 2015-10-15
and
B-
Product: Cisco C300V Email Security Virtual App...
Hello,
I am logged in as the admin and attempting to add a new user in the ESA. However, when I add a new user in the GUI, the option for password is grayed out. Therefore, I am not able to create the new account? Do I have to add a new user via CL...
Hello,
is there someway to define an action to delay message for a certain time period and reprocess them again?
for example. I set condition as I like to forward the message to a special quarantine, that quarantine has a specific time range set in...
Hi,
I enabled "Envelope Sender DNS Verification:" option in Mail flow policy
There is a special SMTP code for "Malformed Envelope Senders:"
But when i connect to my ESA through telnet i can stay "MAIL FROM:" header empty.
Is it OK? If yes, what is "M...
Hi all,
maybe I'm wrong, but I have a question regarding the ssl configuration, which can be made on a ESA.
1. As far as I understood the information from this Technote, PFS on ESA, it is not possible to have ECDHE cipher suites working on the incomi...
Hi
I have Cisco ESA C360 and I have configured the Anti-spam and Anti-virus Engines as per the Cisco default configuration and best practices. Still when I see my Spam Folder in ESA, I find millions of Spam messages from last seven days and cou...
Hello
I have question about the Blockspoofing Alart mails that I get from my ESA appliance. I would like to disable the Alart regurding Blockspoofing. and rigth now I have enabled following Alart type:
System, Hardware, Updater, Outbreeak Filters, A...
Hi,
I am just new with ESA C190 Device. By following some Video resources I already configured the basic Installation of ESA C190. Which Include the below configuration:
1: Hostname , Physcial Interface connectivity with Firewall and mgmt Policies.
...
Hi all,I am attempting to understand the ramifications of configuring IronPort virus scanning to deliver a repaired, encrypted, or unscannable message as an RFC 822 attachment to a new message. What kind of content would be potentially be lost? We...
Hi,
I make a lot of use of the message filters available in AsyncOS. I like them a lot.
One of the drawbacks I'm having right now is that the content matching of 'attachment-binary-contains' only returns the first match it finds in $MatchedContent...
We have the safe unsubscribe feature turned on our virtual ESA appliance and while some times when unsubscribing we are taken to a successful web page message, other times we are not.
I have many that just say Unsubscribing from xxxx@xxxx.com is in p...
SSL/TLS Compression Algorithm Information Leakage Vulnerability SSL/TLS use of weak RC4 cipher SSL/TLS Server supports TLSv1.0 SSLv3.0/TLSv1.0 Protocol Weak CBC Mode Server Side Vulnerability (BEAST) SSL/TLS Compression Algorithm Information Lea...
Hello,
I've upgraded from 10.0.0-203 to the latest MD release 10.0.1-083 and immediately received these errors when trying to test the SSL outbound connection.
tlsverifyChecking TLS connection.Application fault occured: ('egg/coro_ssl.py create|147',...
Hello,
We've noticed a significant downward trend in the amount of emails that we are now blocking based on Reputation as well as the total number of Threat messages since early December. I looked at the Global Volume stats on Sender base and it see...
