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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

One of the major changes between 8 and 9 is in the handling of mail policies, which can now be a lot more sophisticated. My question is regarding the migration of a policy with a large list of senders; in a couple of cases my policies have over 100 d...

exMSW4319 by Level 3
  • 1881 Views
  • 1 replies
  • 0 Helpful votes

Hello all...   Anybody have latest notes for cisco ESA :)  I have CiscoPress/Email Security with Cisco IronPort , but its outdated.. :(    please share any latest notes/guides for Cisco ESA  Basics / Architecture / configurations.. please recommend s...

Hi,   Should i purchase the L-ESA-GSU-LIC licence to enable graymail control feature on my ESA or this feature is included in the ESA premium licence (ESA-ESP-LIC)    Regards 

AirBorn by Level 1
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Hi,   I'd like to know in which document can I find the headers of the functions in Message Filter (ESA) ?   If I want to call a function : - How many parameters ? - Which are the type of these parameters ?   No page found in any web site :-(   Thank...

aarouf by Level 1
  • 1134 Views
  • 1 replies
  • 0 Helpful votes

Hi, I know than  ESA features licencing is based on mailbox. if i purchase an ESA premium licence for 1000 mailboxes and i have actually 2000 mailboxes , what will happen for the extra 1000 mailboxes , does ESA drops them ?   Regards

AirBorn by Level 1
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  • 1 replies
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Hi Team,  we are getting the below alerts:  1) work queue paused, 57 msgs, antivirus  Version: 9.1.0-032 Serial Number: XYZ Timestamp: 10 Nov 2017 14:54:13 +0000   2) The Warning message is:  Error connecting to cluster machine telent (Serial #: XYZ)...

bsrinu001 by Level 1
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  • 3 replies
  • 0 Helpful votes

Hello,   We deployed the C100v with AsyncOS 10.0.3 and got the Vulnerability as below   TLS/SSL Birthday attacks on 64-bit block ciphers(SWEET32)X.509 Certificate Subject CN Does Not Match the Entity NameTLS/SSL Server Supports DES and IDEA Cipher Su...

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Hello @all, I'm a little confused about raid status on virt. appliances. On all appliances the status is "Unknown" and RAID is not available. Is it normal on virtual appliances or is it an indicator for an issue with hdd? VM runs under ESXi. strip fr...