Use modern server-side filters, email authentication (SPF/DKIM/DMARC), user reporting, and clear policies to reduce spam in Microsoft Outlook and protect mailboxes from phishing and malware.
Email servers - including legacy Exchange systems - face spam, phishing, and malware risks. Modern defenses layer machine learning, reputation services, SPF/DKIM/DMARC, and sandboxing with operational practices like patching and MFA.
Enterprise Exchange (on-premises or Exchange Online) uses layered spam and malware filters, quarantine, archiving, DLP and monitoring to reduce spam, prevent threats, and support compliance. Admins balance filtering, mailbox lifecycle management, and legal/privacy obligations.
Microsoft's modern antispam and email security (EOP, Defender for Office 365) use layered detection - reputation, ML, sandboxing, and URL checks - to block malware and phishing. Pair these services with user habits like not opening unknown mail and enabling MFA.