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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
  • 880 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Content Filter

Good Afternoon,We are having an issue with the Content filter from within the IronPort C150 webconsole.A few months ago we upgraded from Exchange 2003 to Exchange 2010, we've just noticed that our encryption filter is not working for outbound email.T...

Resolved! Remote SMTP server never use 2nd MX record

Hello,I have 2 Ironport C370 in centralized management mode.2 MX records in my public DNS :10      frel01.xxx.xx     [IP_Public_frel01]20      frel02.xxx.xx     [IP_Public_frel02]Those 2 records work fine, I checked them with online tools (mxtoolbox....

Resolved! Upgrading to C170's from C150's

I am in the process of upgrading our two clustered C150's (os version 7.1.5-017) to two C170's.  Our old appliances were built when we were on a Domino platform, but we have switched to Exchange 2010 in the last year.  As such, the current config is ...

Add more outgoing IP's to C360

I have 3 different Mail-server setups which all relays through my Ironport C360.I have added the 3 different IP's in the "IP Interfaces" & "Listeners".Each Mail-server setup connects to their own IP and it appears that all is working fine.However whe...

Resolved! Policy quarantine questions

I'd like to perform lawful intercept on outgoing mails.But the requirement is not using keyword, rather, it is based on sending user email addresses.I can do the following, but I will need to update and keep in sync the dictionary.MonitorUserFilter: ...

mychrislo by • Level 1
  • 7590 Views
  • 10 replies
  • 0 Helpful votes

Senderbase Network Server down?

On my two IronPort C660s I'm getting Senderbase Network Server down on Security Services > SenderbaseTrue?I think a lot of e-mail is getting rejected because we have if SBRS score is unavailable the e-mail sender is throttled quite a bit...

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