TBW Abstract Table of Contents 1. Introduction 2. Definitions, Notations, and Conventions 2.1. Textual Notations 2.2. Syntax Notation 2.3. Definitions 2.4. End Of Line 2.5. Case-Sensitivity 2.6. Language 3. Relation To MAIL (RFC 822 etc.) 4. Basic Format 4.1. Overall Syntax 4.2. Headers 4.2.1. Names and Contents 4.2.2. Undesirable Headers 4.2.3. White Space and Continuations 4.3. Body 4.3.1. Body Format Issues 4.3.2. Body Conventions 4.4. Characters And Character Sets 4.5. Non-ASCII Characters In Headers 4.6. Size Limits 4.7. Example 5. Mandatory Headers 5.1. Date 5.2. From 5.3. Message-ID 5.4. Subject 5.5. Newsgroups 5.6. Path 6. Optional Headers 6.1. Followup-To 6.2. Expires 6.3. Reply-To 6.4. Sender 6.5. References 6.6. Control 6.7. Distribution 6.8. Keywords 6.9. Summary 6.10. Approved 6.11. Lines 6.12. Xref 6.13. Organization 6.14. Supersedes 6.15. Also-Control 6.16. See-Also 6.17. Article-Names 6.18. Article-Updates 7. Control Messages 7.1. cancel 7.2. ihave, sendme 7.3. newgroup 7.4. rmgroup 7.5. sendsys, version, whogets 7.6. checkgroups 8. Transmission Formats 8.1. Batches 8.2. Encoded Batches 8.3. News Within Mail 8.4. Partial Batches 9. Propagation and Processing 9.1. Relayer General Issues 9.2. Article Acceptance And Propagation 9.3. Administrator Contact 10. Gatewaying 10.1. General Gatewaying Issues 10.2. Header Synthesis 10.3. Message ID Mapping 10.4. Mail to and from News 10.5. Gateway Administration 11. Security And Related Issues 11.1. Leakage 11.2. Attacks 11.3. Anarchy 11.4. Liability A. Archeological Notes A.1. A-News Article Format A.2. Early B-News Article Format A.3. Obsolete Headers A.4. Obsolete Control Messages B. A Quick Tour Of MIME C. Summary of Changes Since RFC 1036 D. Summary of Completely New Features E. Summary of Differences From RFC 822+1123 References Security Considerations Author's Address