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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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Cisco ESA macros detection

Hi. I configured macros detection on ESA. I added action to block any macros based email must to go quarantine. In order to test it I created simple macros and send it via my personal email. Unfortunatelly esa could not catch it. what could be the pr...

Resolved! Multiple vs single listener advice

Hello community, We are planning to deploy ESA (c390) in our environment in front of Zimbra mail servers. I have read in the forums and official guides that all features could be used even when using a single listener, and that the only benefit of u...

Looking to purchase SMA M380 appliance

Hello all, My company has 3 C370's and are looking to centrally manage them with an SMA M380. I have had most of my questions about the device answered but was looking to see if someone can confirm one more item. Will this device make it so that user...

DKIM query to AOL domain

I am having an issue with AOL emails that fail DKIM with the result:DKIM: tempfail key query timeout (d=aol.com s=a2048 i=@aol.com) My ironports are set to use the root dns servers and if I change this to query my isp servers then I don't receive thi...

Resolved! CISCO Threat Grid

Hello Everyone, My customer is asking for the Threat Grid Sandbox environment, what are the OS platform does Threat Grid Support for sandboxing? Can anyone list down OS platform that we supported on CISO TG e.g Windows, Linux, MS Server 2016 etc?

AMP Limits

Good Morning,Just trying to find out some information.  We have been having problems with AMP queuing for the past 3 - 4 months.  Started happening in March 2019 and happens every 6 - 8 weeks.  We have opened multiple TACs about this and the solution...

Resolved! ESA contents filter

Some mails hits a content filter with 7 conditions -  in log i can only see the contens filter is hit , but not which conditions  - anyway to figure it out ?Thanks C190 & C170 in cluster version 10.0.3-004

Direct Server Response Desgin

Hi Experts, Is it possible to configure VIP using Direct Server Response (DSR) feature in ESA without Load-balancer.   Scenario: Customer ha purchased 4 ESA boxes and want to get configured with VIP, but, customer doesn't have any Load-balancer.   An...

Jay Tiwari by • Cisco Employee
  • 1658 Views
  • 5 replies
  • 0 Helpful votes

Internal Emails Through ESA

Hi Experts, My customer wants send internal email through ESA. Is it possible to send emails which destination is same same domain, for example a Cisco guy send email to another Cisco guy, through ESA?   Customer ESA is deployed with single leg.   Re...

Jay Tiwari by • Cisco Employee
  • 1925 Views
  • 2 replies
  • 0 Helpful votes

Quarantine Question

Not sure where I should put this so if this is not the correct forum I apologize. I have the Cisco Ironport M670.  For Spam, I have a bunch of public folders and shared mailboxes.  Is there a way to have a user release those themselves like they can...

Resolved! Email Req

Hello All, One of my customer is using Trend Micro Scanmail for exchange. Can I replace it with CISCO AMP for Endpoint? Can CISCO AMP protect Exchange 2016 and scan all emails and block spams ? Please help me.  https://www.trendmicro.com/en_ph/busine...

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