Tag
message-format
- Sep 13, 2023 Header Folding and the Line Limits That Shape MIME Encoding How the 998-octet line limit, dot-stuffing, and the 75-character encoded-word bound force the transfer encodings that mail still uses. internet protocols
- Apr 11, 2023 DKIM Canonicalization and What It Actually Signs How a DKIM signature survives transport rewriting, why two canonicalization algorithms exist, and which header fields the signature deliberately excludes. internet protocols
- Nov 8, 2022 Envelope and Header Addresses in SMTP Delivery Why a message carries two independent sets of addresses, which one routing and bounces actually consult, and what breaks when a gateway rewrites one but not the other. internet protocols