Us - Mailaccess.txt

IP ranges and domains permitted for direct relay.

Known malicious sources to be summarily declined. US MAILACCESS.txt

Mandatory use of TLS for both SUBMISSION (port 587) and IMAPS (port 993) to protect data in transit. 3. Protocol Compatibility IP ranges and domains permitted for direct relay

Session duration limits for IMAP/POP3 connections to prevent resource exhaustion. 5. Implementation Notes US MAILACCESS.txt

The US-MAILACCESS.txt document serves as a foundational specification for controlling access to mail server resources within the US-domain network architecture. It bridges the requirements of legacy systems (like IMAP2bis) with modern encryption standards to ensure secure message handling across distributed nodes.