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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.

 

Forum Posts

  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
  • 1500 Views
  • 2 replies
  • 0 Helpful votes

Hi, Is it possible to check the spf cache for a source IP and recipient email address ?The message tracking shows the DMARC validation, but not the detail. (as there is no DKIM for this domain, I assume SPF is the faulty test).version is ironport clo...

I am getting this error from mt ironport C160  A RAID-event has occurred: RAID Read error (5), 5 read errors total disk 0[READ(offset=69281807872, length=65536)] RAID Read error (5), 6 read errors total disk 0[READ(offset=69283839488, length=65536)] ...

Maen Abbasi by Community Member
  • 2888 Views
  • 4 replies
  • 0 Helpful votes

Does anyone have any experience with configuring SNMP alerts on C-Series appliances?  I'm interested in receiving alerts when there's a certain amount of emails in the workqueue.  Is this possible? We experienced an issue the other day where we recei...

Where I can find description of messages:The Critical message is: An application fault occurred: ('egg/CommandManager.py call|741', "<type 'exceptions.MemoryError'>", '', '[egg/CommandManager.py run|546] [egg/CommandManager.py _run|599] [egg/CommandM...

sd-vendors by Community Member
  • 1078 Views
  • 3 replies
  • 0 Helpful votes

Hello,I'm looking to extract part of a subject title sandwiched between two special characters ([ & ]) and use that to create a new subject title in a new e-mail.So for example, if the subject title of the e-mail says "[This is the main subject title...

Paul Caley by Community Member
  • 856 Views
  • 1 replies
  • 0 Helpful votes

Is there any document to refer while writing scripts for message filters?My ESA is on version 8.0.1 and I am unable to make text "case insensitive" while checking that text under "contains" rule? Is there any mechanism to look for text by ignoring th...

Anshul Sinha by Community Member
  • 2013 Views
  • 4 replies
  • 0 Helpful votes

In the 8.5.6-092 update, there's a new feature called Header Repeats that allows you to filter subject or sender criteria in the header. Is there a GUI configuration page for this? All I can seem to find in the documentation refers to CLI configurati...

kmkrause2 by Level 2
  • 1591 Views
  • 2 replies
  • 0 Helpful votes
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