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New Capabilities to Protect Your Users with Cisco Secure Email - AMA

Community Manager
Community Manager


Ask Me Anything Forum

This event is a chance to review how customers of all sizes face the same daunting challenge: email is simultaneously the most important business communication tool and the leading attack vector for security breaches. Cisco Secure Email enables users to communicate securely and helps organizations combat Business Email Compromise (BEC), ransomware, advanced malware, phishing, spam, and data loss with a multilayered approach to security.

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Ask questions from Monday, February 1 to Friday, February 12, 2021

Featured Experts

Photo_dmccabej_100x140.png Dennis McCabe Jr is a Technical Consulting Engineer at the Cisco Global Technical Assistance Center (TAC) for Content Security Email. With more than five years of experience and a broad scope of knowledge relating to Cloud Email Security (CES) and the Email Security Appliance (ESA), Dennis holds certifications including Cisco’s Certified Specialist with Email Security and an MCITP concentrating on Microsoft Exchange. He holds a CCNA Security certification.

Photo_ericpark_100x140.png Erica Parker is an experienced Technical Consulting Engineer with a demonstrated history of working in the computer networking and cybersecurity industry. With a Bachelor's degree focused in Computer Systems Networking and Telecommunications from Rochester Institute of Technology, she is skilled in Email Security, Software Deployment, and Security Penetration testing with a passion in biomedical sciences. She holds two certifications on CCNA R&S and Security.

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38 Replies 38



In Exchange, you will need to configure Send/Receive connectors based on the flow of traffic that you require. As an example, a Receive connector to accept mail being sent in from external > ESA > Exchange, and a send connector for outbound traffic going from Exchange > ESA > External. 


For HA, it would depend on what you're referring to. The ESAs do not have any form of HA functionality builtin; however, you can configure them into a cluster to share configuration across devices. More information on that can be found here


For actual high availability as far as mail traffic is concerned, you will want to configure DNS round-robin and/or have some form of load balancer in place within your network. Then, traffic can move between ESAs automatically if for some reason one is unreachable. 



-Dennis M.

Community Manager
Community Manager

You're amazing!

Find below a question from @Doug Maxfield :


Good Morning,

We are looking at moving/building new a vESA in AWS.  Just checking to see if anyone has done this.  Any information would help.  I would think it would be similar to "standing up" in a VM environment.