nx_email_mta_io.nx

nx_email_mta_io.nx -- EMAIL LIVE LAYER: SMTP server over a real socket. module: nishi-core.email.mta_io depends: nishi-core.email.mta, nishi-core.email.retrieve, nishi-core.email.mailbox capability: CORE_EMAIL Crosses the pure R7 server LOGIC into a running service: read SMTP command lines off a connected fd, drive the nx_email_mta FSM, collect the DATA phase, de-dot-stuff it (R4 nx_pop3_dedot), and DELIVER each accepted recipient's copy into the R3 mailbox store (nx_email_mailbox over nx_seg_store). One function serves one connection so it drops straight into an accept loop (the loopback gate forks a client at it; a real daemon would loop accept()). This is the receive half of a working mailbox: mail addressed to a local recipient (e.g. self@jasonewest.com) lands in the store, where the web UI (next rung) reads it. license_tier: INDEPENDENT_REDERIVE genealogy_id: international-research-sources/ietf/rfc_5321 lineage_id: nishi_email_mta_io nx_safety_envelope: intended_use: "Serve one inbound SMTP connection: FSM + relay policy + DATA collect + dedot + store delivery." sil_target: SIL2 (open relay / mail loss) evidence: [live_loopback_deliver, relay_refused_on_wire, byte_exact_after_dedot] hazard_register: [bug-tape-open-relay, bug-tape-unbounded-data] residual_risk: "STARTTLS-on-25 + SIZE limit + concurrent accept loop are follow-ons; this serves one conn." verdict: NOT_YET_EVALUATED