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Secure Email Gateways

Email Security Gateways

They say email is the most popular & primary attack vector in today's world.
It is not only important to secure your emails but its also important that they are well designed which would otherwise will lead to operational overhead & loss of productivity.
In this post, you will find everything from designing, feature capabilities & security that gateways have to offer for your business emails.
So let's get started!
Primary Function of Mail Gateways aka SMTP Relay Servers
To keep it simple, they sit in between your enterprise email exchange servers & any other external exchange servers around the globe.
So what's the catch here. Yes! You got it right! SMTP is the protocol that manages this communication between inter-domain exchange servers.
So when Joe@hiscompany.com wants to send an email to Lily@hercompany.com.Then Joe's exchange servers would forward his email to hiscompany's mail gateways to send it to Lily.How will the email actually make it to Lily's mailbox?Of course, there is also a mail gateway at hercompany.com as shown inthe Fig.1.

Fig.1

Email Gateway Architecture




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