Tagged: email security
Email OperationsEmail incidents — blacklistings, account compromises, delivery failures, domain spoofing — are far less damaging when you have a plan before they happen. Here's how to build an email incident response plan that's actually useful under pressure.
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Email SecurityNot all email threats come from outside. Insider threats — whether malicious, negligent, or from compromised accounts — represent a significant and often underestimated risk to business email security. Here's how to recognize, prevent, and detect them.
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Email AuthenticationDKIM key rotation limits your exposure if a signing key is ever compromised — but doing it wrong breaks email authentication in transit. This guide covers the safe rotation sequence, including why you must keep the old public key in DNS for 48–72 hours after switching.
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SMTP & InfrastructureA mail server connected to the internet is a high-value target for open relay abuse, spam injection, and phishing attacks. This checklist covers SMTP hardening essentials — from closing open relays and enforcing TLS to rate limiting, authentication records, and monitoring.
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Email SecurityBusiness email compromise attacks almost always start with a stolen password. Multi-factor authentication closes that attack path. Here's how MFA works, which options to choose, and how to roll it out across an organization.
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Email SecurityTechnical email security controls matter, but they're only half the picture. Email security awareness training prepares your team to recognize phishing, BEC attacks, and spear phishing before they cause damage — here's how to build a program that actually works.
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Email AuthenticationSTARTTLS encrypts email opportunistically — meaning a network attacker can strip the encryption handshake and receive mail in plaintext. MTA-STS fixes this by letting your domain publish an enforced TLS policy that sending servers must honor.
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Email SecurityEmail encryption isn't one thing — it's three different layers that each protect something different. This guide explains TLS transport encryption, S/MIME end-to-end encryption, and PGP: what each one covers, where it falls short, and how businesses actually use them.
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Email AuthenticationTLS-RPT delivers daily reports on TLS connection failures when other servers try to deliver mail to your domain. This guide explains how to deploy TLS-RPT with a single DNS record, what the JSON reports contain, and which failure types to watch for in your monitoring.
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