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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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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
  • 903 Views
  • 2 replies
  • 0 Helpful votes

Memory Buffer Ironport ESA

Hi, We have ESA C380,  which does not present high usage in memory and cpu, however usage 100% in memory buffer. System RAM Utilization 0% CPU Utilization Total 4% MGA 2% Anti-Spam 2% Anti-Virus 0% Reporting 0% Quarantine 0% Disk I/O Utilization 0%...

sgarayes by • Level 1
  • 4468 Views
  • 7 replies
  • 0 Helpful votes

Cisco ESA and Umbrella integration

Hi We have ESA C670 appliances with AMP and Cisco Umbrella. Would like to integrate the ESA with Cisco Umbrella in order to enhance the protection in all possible ways and utilize the service offerings from Umbrella. Is there any guide/document or UR...

Pravar by • Level 1
  • 3852 Views
  • 7 replies
  • 0 Helpful votes

Resolved! delegate access to Dictionaries

Hello, We want to create a  custom role to delegate access to dictionnaries to the help desk. The idea is to create a role  that can access : - Message tracking - Reporting - Dictionnaries. Is it possible to do that ? and if not what's the role that...

IRONPORT Alert Messages

Hello, We are receiving the following messages from the ESA: The Critical message is:"An application fault occurred: ('encodings/__init__.py search_function|100', "<type 'exceptions.ValueError'>", 'Module name too long', '[egg/omh.py queue_worker_t...

SupportAC by • Level 1
  • 3061 Views
  • 5 replies
  • 0 Helpful votes

Resolved! quarantine mails that matched 2 or more filters

Hello,we currently have multiple content filter in use that warns user in the subject line about the found content.something like: {POSSIBLY MALICIOUS ATTACHMENT REMOVED} or {POSSIBLY MALICIOUS URL} and so on.what we want to do is that if we find two...

daro by • Level 1
  • 1434 Views
  • 7 replies
  • 0 Helpful votes

Resolved! Content filter - Header name

I would like to know about content filter condition -> Other header -> Header name and Header exists. Could you please what I need to include in Header name and use of Header exists. Also, give me a scenario to get the exact picture. Thank you

pbabu6001 by • Level 1
  • 4427 Views
  • 3 replies
  • 0 Helpful votes
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