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milter, postfix, app, domain: cite the source of what they rely on (assumptions part B)

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Comments only, no behaviour changed. go-milter v0.4.1 (session.go: one
session per connection, replaced after a non-continue reply; macros per
stage), Postfix 3.7.11 (milter8.c, smtpd_check.c
reject_auth_sender_login_mismatch(), mail_addr_find.c, showq_compat.c,
mail_conf_time.c, mail_params.h), Cyrus SASL 2.1.28 (saslpasswd.c,
plugins/sasldb.c: deleting a missing login is not an error), OpenDKIM
2.11.0~beta2 (opendkim-db.c, opendkim-genkey), Berkeley DB 5.3 db_dump,
rspamd 3.11.0. Comments that claimed what the source denies are corrected
(sasldb keeps the password as given, not hashed; an embedded newline is
kept, not truncated; rspamd sorts symbols by absolute weight); fixtures say
seen or composed. The sender check's From: parsing gets no citations: it is
replaced by the port of OpenDKIM's dkim_mail_parse next.

Contradictions left for their own commits: B-G5 cleanAddress, B-PS1 first
key wins, B-PQ1 the forced-expire flag, B-PQ10/PQ11 Postfix's time units.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
mix
2026-10-14 19:36:12 +03:00
co-authored by Claude Opus 5.5
parent ce363f48dd
commit b113e72c71
23 changed files with 307 additions and 26 deletions
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internal/milter/sender_test.go
+9 -6
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@@ -13,18 +13,21 @@ import (
"github.com/mixeme/selfpost/internal/store"
)
// senderMaps is a sender_login_maps file as internal/postfix writes it: shop
// and news send as any address of their domains, billing only as two listed
// addresses of example.org, and two applications share shop.example.org.
// senderMaps is a sender_login_maps file composed by hand in the format
// internal/postfix writes (key, blank, comma-separated logins), though not in
// its order (renderSenderLoginMaps sorts the keys): shop and news send as any
// address of their domains, billing only as two listed addresses of
// example.org, and two applications share shop.example.org.
const senderMaps = `@news.example.net news
@shop.example.org shop,shop2
invoices@example.org billing
billing@example.org billing
`
// signingTable is OpenDKIM's SigningTable for the same server: the three
// sending domains, one more that has no application yet, and the server's own
// name.
// signingTable is a SigningTable for the same server, composed by hand: the
// three sending domains, one more that has no application yet, and the
// server's own name. Its key-name column is not what internal/domain
// renderTables writes (the domain name); the check reads only the pattern.
const signingTable = `*@news.example.net selfpost._domainkey.news.example.net
*@shop.example.org selfpost._domainkey.shop.example.org
*@example.org selfpost._domainkey.example.org