DKIM / SPF / DMARC
What is DKIM / SPF / DMARC?
Three email authentication protocols that prove an email really came from who it claims — stopping spoofers and phishers from impersonating your domain.
Why DKIM / SPF / DMARC Matters
Without these, anyone can send email pretending to be you. With them, receiving servers verify the sender and block fakes. It's the difference between being spoofed and being protected.
Related Topics
Related Terms
Phishing
A fake email, text message, or website that impersonates someone you trust — a bank, a coworker, a service provider — to trick you into handing over passwords, clicking harmful links, or sending money. The message looks legitimate but leads to a copycat site designed to steal your credentials.
SecurityIMAP / POP / SMTP
The three protocols that make email work: SMTP sends email, IMAP syncs it across devices, and POP downloads it to one device only.
Microsoft 365Email Archiving
A separate, tamper-proof copy of every email sent and received — kept for compliance, legal discovery, and business continuity.
Microsoft 365Microsoft 365
Microsoft's subscription bundle of cloud productivity apps: Outlook email, Word, Excel, PowerPoint, Teams, OneDrive, SharePoint, and more — available online in a browser and installed on your desktop. You pay per user per month or year and always have the latest version.
Microsoft 365