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.
Hi
We activated DLP with PCI Policy, but doesnt work, we need to block all the users to send (outgoing mail) the only attachment allowed is PDF with Cards Numbers
Regards
Hi All,
Behind Load Balancer, there are 3 esa. Two esa in the cluster and one esa as standalone. When we tried to put standalone esa in the cluster. It stop sending and receiving the mail. After removing the esa in the cluster which we added it star...
I'm in the process of rolling out a C300V (9.7.1) and am getting stuck on outgoing mail.
The design is 1 management, 1 incoming and 1 outgoing interface. Incoming mail is working fine - no problems. Outgoing mail is a different issue. Network grou...
I'm trying to write a content filter that looks for a text-string with pound-sign (£).
Seems that £-sign is somehow special.
My text-string is £brittish-1 but I don't find out how to match that string.
Any ideas about this ?
Hello,
I'm hoping someone can help me out with a question. I have downloaded the Cisco ESA virtual appliance VMDK image and mounted it on a VMare ESXi server. I managed to obtain a 30 day trial licence, so when I installed the appliance, all of the f...
I have 5 content filters on my ESA appliance. All of them work well if there is only one recipient in the email. The difference between my rule number 4 and 5 are that I am checking "rcpt-to-dictionary-match" domains on my rule 4.
The problem is when...
Hello!
I have Outgoing Mail Policy and Outgoing Content Filter on IronPort. Outgoing spam message dropping. Outgoing suspected spam message deliver.
When user gets incoming suspected spam message and want forward the suspected spam message - Ironp...
Hello,
I am fairly new to the Ironports and I have a Cisco C100V Email Security Virtual Appliance. We have actually deployed four in our environment and they are clustered together. What I am looking for is a way to combine the reports for incoming...
Hey All,
We have 2 ESA's C370's in a cluster. I noticed that AsyncOS 10 is currently out. Would we be ok to upgrade our C370's to AsyncOS10 ? THey are currently Running 9.7.1.
I am asking because of this :
Supported Hardware for This Release
• All ...
Dears,
We've deployed C100V ESA Cloud, but we are sending a lot of emails with no sender to recipient ams0 ?
the public sender shows our mail boxes public IP!
does anyone hear about this domain?
regards,
Mustapha
Hi,
Could someone please shed some light on the meaning of the following warning message. I've check the cluster status (two C170's) and everything is sync'd and communicating.
The Warning message is:
Error connecting to cluster machine company.c...
Good Morning,
In the process of migrating from our current mail system to O365. We will be keeping our MX records on the On Prem Cisco ESA and all messages Inbound/Outbound will go through it. We will be looking to move the ESA to the cloud, but ou...
We have a cloud-based IronPort ESA and we perform LDAP lookup on all incoming mail. The problem we are having is that we want to turn off the NDR that is generated from the IronPort when an email is sent to a non-existent email address. In other wo...
