Appendix A: Supported RFCs

SMTP RFCs:

• RFC 1213 (Obsoletes: 1158) (Management Information Base for Network Management of TCP/IP-based Internets: MIB-II) reference 1
• RFC 1918 (Obsoletes: 1627, 1597) (Address Allocation for Private Internets) reference 1, 2, 3, 4
• RFC 1985 (SMTP Service Extension for Remote Message Queue Starting)
• RFC 2034 (SMTP Service Extension for Returning Enhanced Error Codes)
• RFC 2045 (Obsoletes: 1590, 1522, 1521, 1342, 1341) (Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies)
• RFC 2505 (Anti-Spam Recommendations for SMTP MTAs)
• RFC 2634 (Enhanced Security Services for S/MIME)reference 1
• RFC 2920 (Obsoletes: 2197, 1854) (SMTP Service Extension for Command Pipelining)reference 1
• RFC 3207 (Obsoletes: 2487) (SMTP Service Extension for Secure SMTP over TLS)
• RFC 3461 (Obsoletes: 1891) (SMTP Service Extension for Delivery Status Notifications (DSNs)) reference 1
• RFC 3463 (Obsoletes: 1893) (Enhanced Mail System Status Codes) reference 1
• RFC 3464 (Obsoletes: 1894) (Extensible Message Format for Delivery Status Notifications)
• RFC 3635 (Obsoletes: 2665, 2358, 1650) (Definitions of Managed Objects for the Ethernet-like Interface Types) reference 1
• RFC 4954 (Obsoletes: 2554) (SMTP Service Extension for Authentication)
• RFC 5321 (Obsoletes: 2821, 1869, 1651, 1425, 974, 821) (SMTP) reference 1, 2, 3, 4
• RFC 5322 (Obsoletes: 2822, 822) (Internet Message Format) reference 1, 2, 3, 4
• RFC 5751 (Obsoletes: 3851 (Secure/Multipurpose Internet Mail Extentsion (S/MIME) Version 3.2) reference 1, 2, 3, 4
• RFC 6376 (Obsoletes: 5672, 4871, 4870) (DomainKeys Identified Mail (DKIM) Signatures)reference 1
• RFC 6522 (Obsoletes: 3462, 1892) (Multipart/Report Content Type for the Reporting of Mail System Administrative Messages)
• RFC 6409 (Obsoletes: 4409, 2476) (Message Submission) reference 1
• RFC 7208 (Obsoletes: 4408) (Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail) reference 1Note: This RFC is partially supported. Macros and EXISTS modifiers are currently treated as neutral.

IMAP RFCs

• RFC 2088 (IMAP4 Non-synchronizing Literals)
• RFC 2177 (IMAP4 Idle Command)
• RFC 2221 (Login Referrals)
• RFC 2342 (IMAP4 Namespace)
• RFC 2683 (IMAP4 Implementation Recommendations)
• RFC 2971 (IMAP4 ID Extension)
• RFC 3348 (IMAP4 Child Mailbox Extension)
• RFC 3501 (Obsoletes: 2060, 1730) (IMAP4 rev1)
• RFC 3502 (IMAP Multiappend Extension)
• RFC 3516 (IMAP4 Binary Content Extension)
• RFC 3691 (Unselect Command)
• RFC 4315 (Obsoletes: 2359) (UIDPLUS Extension)
• RFC 4469 (Catenate Extension)
• RFC 4731 (Extension to SEARCH Command for Controlling What Kind of Information Is Returned)
• RFC 4959 (Extension for Simple Authentication and Security Layer (SASL) Initial Client Response)
• RFC 5032 (WITHIN Search Extension)
• RFC 5161 (Enable Extension)
• RFC 5182 (Extension for Referencing the Last SEARCH Result)
• RFC 5255 (IMAP Internationalization)
• RFC 5256 (Sort and Thread Extensions)
• RFC 5258 (Obsoletes: 3348) (List Command Extensions)
• RFC 5267 (Contexts for IMAP4)
• RFC 5819 (Extension for Returning STATUS Information in Extended LIST)
• RFC 6154 (LIST Extension for Special-Use Mailboxes)
• RFC 6851 (MOVE extension)
• RFC 7162 (Obsoletes: 5162, 4551) (IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTOR) and Quick Mailbox Resynchronization (QRESYNC))

POP3 RFCs

• RFC 1939 (Obsoletes: 1725, 1460, 1225, 1081) (POP3)
• RFC 2449 (POP3 Extension Mechanism)

Other RFCs

• RFC 1155 (Obsoletes: 1065) (Structure and Identification of Management Information for TCP/IP-based Interface)
• RFC 1157 (Obsoletes: 1098, 1067) (SNMP v1)
• RFC 1213 (Obsoletes: 1158) (MIB 2)
• RFC 2578 (Obsoletes: 1902, 1442) (Structure of Management Information Version 2)
• RFC 2579 (Obsoletes: 1903, 1443) (Textual Conventions for SMIv2)
• RFC 2595 (Using TLS with IMAP, POP3 and ACAP)
• RFC 3410 (Obsoletes: 2570) (SNMP v3)
• RFC 3416 (Obsoletes: 1905, 1448) (SNMP v2)