Similarly, when the internal mail server receives a message destined for an external network, it accepts the message...
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
from the client and then passes it to a DMZ's SMTP relay. The relay then forwards the message to the destination server. This architecture prevents direct connections from the Internet to the internal mail server, providing a layer of isolation.
As an added bonus, you can use a spam-filtering device as your SMTP relay. Devices like SendMail's Sentrion appliances and the Barracuda spam firewall are popular tools that can reduce the spam-filtering burden on clients.
Dig Deeper on DMZ Setup and Configuration
Related Q&A from Mike Chapple
Cloud compliance issues are no reason for enterprises not to move to the cloud. Expert Mike Chapple explains why, as well as what to keep in mind ...continue reading
The GAO reported on SEC cybersecurity weaknesses, even though the SEC regulates cybersecurity. Expert Mike Chapple discusses the effects of this ...continue reading
Enterprise compliance can be a burden to manage, which is where a PCI ISA can be helpful. Expert Mike Chapple explains how a PCI Internal Security ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.