Cisco Email Security (ESA) Stability

Information Security Analyst at a healthcare company
It's been stable. I don't have to do anything with my email gateways. They chug along and they do what they do. They don't always get it perfect, but I have never had one fail on me. And I've never had a problematic appliance that I'm aware of. We had Proofpoint for a lot longer, but if I were to compare the percentages, I would have to say that the stability of Cisco appliances is superior to that of our previous Proofpoint environment. View full review »
Regional ICT Security Officer EMEA at a energy/utilities company with 10,001+ employees
The system is very stable. We have had very little downtime and the system is, in general, reliable. We have occasionally had hardware problems because we are using an appliance-based solution, but that might change. We may consider going to virtual systems. In general, we have had a good experience with this product. The hardware, given occasional failures, has been very reliable. There is an upgrade process for keeping the system running with the most current, recommended version of AsyncOS. We have had very few problems where an upgrade has gone wrong. We've been very pleased with the solution. View full review »
Security Engineer at a energy/utilities company with 201-500 employees
We expect 95 to 98 stability (perfection) in the product. We have one person doing maintenance, which is me. I handle this product along with three other security products. View full review »
Find out what your peers are saying about Cisco, Proofpoint, Fortinet and others in Messaging Security. Updated: March 2020.
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John Agunbiade
Network Security Engineer at a tech services company with 11-50 employees
It's quite stable. We didn't have issues because, when I think about the issues, they were from us. The two boxes were in cluster, so when the guys at the other site would start without telling us, we would get cluster error messages. Apart from that, it was fine. View full review »
Gaurav Shakya
Information Security Administrator at a tech vendor
It was very stable. My experience with that version of it was really great. Apart from the improvement needed to the filters, it was all good. View full review »
Network Security Engineer at Konga Online Shopping Ltd
From my perspective, it's pretty stable. We didn't have any issues. View full review »
Ed Dallal
Founder, CEO, & President at Krystal Sekurity
It's very stable. We haven't had any issues or downtime. View full review »
Keith Kroslow
Senior Email Engineer at a legal firm with 1,001-5,000 employees
It is very stable. I haven't had any issues with memory or CPU. I haven't had any unstable performances from any of the appliances. Initially, we had physical appliances, then we went and upgraded to virtual appliances at some point. However, even the physical appliances were pretty stable. I did run into one issue at one time where I had to shut something off. It was a bug, but being down for an hour or two is just two costly for our firm. Deployment and maintenance is handled by two people (email engineers). View full review »
Muhammad Qureshi
Network Security Consulting Engineer at a manufacturing company
The stability of the solution is very good. They always come out with very stable versions of firmware and it has never caused any issues. View full review »
Rizwan Siddiqi
Network Security Consultant at a tech services company with 51-200 employees
It's a very stable product. We hardly have any issues. Issues are mostly around license activation and the like. It's a reliable product and very popular here in the Middle East. View full review »
Syed A. Raheem
Group Head of Cyber Security at a transportation company with 10,001+ employees
IronPort is indeed a very stable solution, including both software and hardware. View full review »
Sofiane Medhkour
Head System /Solution Architect at sorfert
It is currently stable. I will upgrading next year, but the current version has been working great for six year. We have two people (system administrators) performing maintenance for the system and security part for the company. View full review »
Setu Bandhan Saha
System Administrator at a financial services firm with 1,001-5,000 employees
I have had no complaints with the stability. View full review »
Find out what your peers are saying about Cisco, Proofpoint, Fortinet and others in Messaging Security. Updated: March 2020.
407,845 professionals have used our research since 2012.