Spoofing is not the same as account compromise.
Classic spoofing forges a sender domain without taking over the real mailbox. A compromised account, by contrast, sends through a legitimate account. The distinction determines which controls can help.
Domain protection reduces simple forgery.
SPF, DKIM and DMARC help recipients decide whether a message matches the claimed domain. Every legitimate sending source must be known, or genuine mail may fail authentication.
Display names remain a separate problem.
An attacker can show the name of a known executive while using another domain. Small screens often emphasise the display name rather than the full address. External-sender marking and payment checks add context.
Mail protection needs ongoing maintenance.
New cloud tools, newsletter platforms and scanners change legitimate sending routes. Managed email security should keep DNS and filtering rules aligned with those changes.
Compare reply address and visible sender.
A familiar sender name with a different reply address can be a warning sign. Employees should know how to display the complete sender information in their mail application.
Lookalike domains remain possible despite DMARC.
DMARC protects a real domain against direct forgery, but an attacker can register a similar-looking domain. Mail filtering, domain monitoring and careful verification of critical requests remain necessary.
External labels can provide context.
Marking messages from outside the organisation does not prevent attacks, but it helps users question supposedly internal instructions. Keep the label clear without making it so dominant that it is ignored.
Review your own domain regularly.
DNS records, DKIM keys and DMARC reports should not be forgotten after setup. Provider changes and new sending services can alter authentication results and delivery.