The email gateway is the primary communication channel through the cloud between organizations; therefore, it plays an essential role in every business. Scammers may exploit this critical aspect by utilizing phishing emails to compromise your organization’s email infrastructure. Hence, choosing the right email gateway for your company directly impacts your security infrastructure.
According to cybersecurity experts, the widely distributed email security gateways available via the cloud are preferable. These gateways get their reports from large enterprises, addressing more malicious IP Addresses and domains, resulting in an extensive database of daily identified attacks. However, if cloud-based is not available, you may want to look for an email gateway which includes these main elements:
- DKIM signature support, which enables your legitimate emails to be digitally signed and verified by the receivers.
- The Sandboxing feature to allow email attachments and content to be safely scanned against malware and viruses.
- Advanced up-to-date Threat Intelligence to automatically blacklist or whitelist domains and senders according to the email reputation.
- Auto-pull functionality to automatically pull emails identified as threats from your organization’s employees’ mailboxes.
In addition to the above, you should also place emphasis on the following configurations:
- Anti-spoofing and anti-spamming rules.
- A Rewrite policy for hyperlinks, allowing you to trace the clicks on a URL included within an email, in addition to monitoring the gateway logs daily.
- Enabling the authentication checks (SPF, DKIM, DMARC) for your email gateway’s inbound traffic to verify the sender’s of the email, thus building the authenticity of the received email.
These basic guidelines will make your email gateway more efficient in dealing with forged emails and protecting your organization from receiving such malicious emails.