cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements
Cisco Secure Email Support Community

Product Support Talos Support Cisco Support Reference + Current Release
Gateway Reputation Lookup Open a support case Secure Email Guided Setup
Gateway: 14.0.0-698
Cloud Gateway Email Status Portal Support & Downloads docs.ces.cisco.com
Email and Web Manager: 14.0.0-404
Email and Web Manager Web & Email Reputation Worldwide Contacts Product Naming Quick Reference
Reporting Plug-in: 1.1.0.136
Encryption Bug Search
Encryption Plug-in: 1.2.1.167
Cloud Mailbox Notification Service
Outlook Add-in(s): More info

915
Views
0
Helpful
5
Replies

Details on how secure reply and forward works within CRES

Could you provide me with more detail on how secure reply and forwarding work within CRES? It look as though the message is being stored within CRES somehow. I assumed that with CRES the actual message is never sent to CRES, but only the keys were. Is there a more technical detail on exactly how CRES works then what is in the User or Advncaed Guide for email security?

Thanks!

5 REPLIES 5
kyerramr
Beginner

True, when a recipient of the secure message does a reply/reply all/forward of the secure message this is composed via a web applet over https and message is sent to CRES server which transmits this message to the sender/recipient of the message.

So, simple answer for secure replies and forward this is sent by the CRES server. One reason I see behind this, there is no way to rely on end user/recipient's hostmachine or network could provide a way to encrypt the message and deliver the message to intended recipient securely.

More information is available on the support portal CRES documentation.

Thanks.
Kishore

Can you provide any details on how the message body contents are transmitted to CRES? I was under the assumption that CRES only stored keys.

kyerramr
Beginner

With Secure replies and Secure Forward message is transmitted from the host machine to CRES server's over HTTPS and from there message is delivered via PXE encrypted envelope to your internal user or you could opt for secure replies via TLS which would mean connection between CRES and your MTA (IronPort ESA) will be TLS encrypted and message is sent in plaintext through secure channel.

Hope this helps!

-Kishore

Just to be sure, is the message ever stored within CRES?

kyerramr
Beginner

Key for the secure reply message is stored within CRES, but the actual message is queued for delivery.

-Kishore

Content for Community-Ad