📧 Mail Server

This is the mail server for mailcheck.tools.

This server implements modern email security standards including:

• SPF (Sender Policy Framework)
• DKIM (DomainKeys Identified Mail)
• DMARC (Domain-based Message Authentication, Reporting & Conformance)
• MTA-STS (SMTP MTA Strict Transport Security)
• DANE (DNS-based Authentication of Named Entities)