How to stop excessive spam in corporate email: causes and blocking strategies

Excessive spam in corporate email typically results from inadequate sender authentication, weak domain security, or poor filtering configurations. First, verify and implement SPF, DKIM, and DMARC protocols for your domain—these authenticate legitimate senders and block spoofed emails. Services like 138 Enterprise Email include built-in anti-spam filters, virus scanning, spoofing identification, and unknown sender alerts. Strengthen security by enforcing strong passwords (minimum 8 characters with letters, numbers, and symbols per official guidelines) and enabling multi-factor authentication. Regularly monitor login IPs, sent items, and filtering rules for anomalies. Effectiveness depends on correct initial setup and continuous monitoring; some advanced threats may require additional layers. For persistent issues or configuration support, contact official service channels for domain-specific solutions.