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...
Email Security
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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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Forum Posts
Is there any way to view the text source of a HTML formatted message in the Centralized SPAM Quarantine?Ironport renders a text view of Quarantined HTML formatted messages. This view does not show underlying link references, only what is displayed t...
Hi,we plan to use TLS to do encryption from our Ironport to some other Email Gateways.Do we need the Feature "IronPort Email Encryption" to use this TLS encryption? We only have the features Anti-SPAM and Anti-Virus active.Thanks and best regards,Pee...
Hope I explain this properly....here goes: We have a 2007 Exchange system that receives mail from outside our organization via our Cisco Ironport Email Gateway. The Ironport first scans the message for viruses and spam. Once that takes place it sends...
Hi,Is it possible to have two subnets on one physical interface and if so how do I create the rule/route to do this? Or, will it only work with different subnets on each physical inteface?
Concerning the adobe / java vulnarability.Does anybody know if it is possible to configure ironport to filter .pdf attachements with java?http://isc.sans.org/diary.html?storyid=5902
Want to configure Ironport email appliance like the rest of our firewalls which reside on a different subnet.I have configured one interface on the unit to have the same ip as our borderware firewall. For example:192.168.1.1I ping un-successfully fr...
Resolved! Blocking Inbound File Attachments
Hi,Currently, we are upgrading our email firewall from Borderware to Cisco C160 Ironport. I have loaded the config file and am now in the process of setting up/configuring policies, content filter. I want to block certain inbound attachments such a...
Resolved! Virtual Gateways
Hi,Is there a limitation on the number of virtual gateways that can run on AsyncOS?We currently use virtual gateways in a very limited manner. However, we want to exploit the use of virtual gateways and assign one per customer, but before going down...
Resolved! How to see the queue
Hi ,How can I see the pending mesages to be delivered or received in queue. Can I view the inbound and outbound queue and the messages in it with all the details ?If Ironport ha tried to end a message and failed, can I see the count of tries? Regard...
Hi folks,I'm trying to integrate IronPort with this other box that does scanning and stuff on emails that is not an MTA. It's supposed to receive emails from IronPort, scan and do what it's doing, then send it back to IronPort to send it out to the r...
Hello!I have a Ironport C150 and I get this Email:The Warning message is:Your "IronPort Anti-Spam" key will expire in under 60 day(s). Please contact your authorized IronPort sales representative.Version: 7.1.3-010What does that mean?There are no mo...
Hi allHow can i configure IronPort to never include the original message body into bounce messages or DSNs?I would like to always include header information (sender, receipient, subject) of the original mail, but never body information or even attach...
Hi All:I have been asked to audit an IronPort C300 running v6.3.5-003 to determine the IP and hostname of all systems sending email through the device. This is my first time working with an IronPort and would appreciate any suggestions on how to best...
Resolved! Policy-based forwarding
Hello,I'm not familiar with the IronPort ESA configuration at all. Just the concepts of what it does. However, I need to configure one for another appliance I'm installing. I need to be able to choose where to forward mails based on either the port t...
hi i have a HAT over a private listener with RELAY mail flow policy and my clients with microsoft outlook can RELAY messages without problems. New SMTP ICID 64494 interface Data 2 (XXXXXX) address XXXXXXX reverse dns host XXXXXXX verified noThu Aug 1...
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