Owner, 2026-10-18: "Оба предложения делаем"; the mockup is c10cd78. The
security audit's M7: Required is Postfix's encrypt level, which checks no
certificate - it keeps the mail from a listener, not from one who answers
in the upstream's place.
- A fourth TLS mode, Verified, stored as Postfix's level secure (migration
0014 rebuilds inbound_transports with the wider CHECK; schema 14) and
written to the TLS policy map like the others. Postfix matches the
certificate against the next hop's name (smtp_tls_secure_cert_match =
nexthop, dot-nexthop, the default; postconf(5)), so Verified is refused
for an upstream given by address (checkSecureHost).
- Postfix's SMTP client trusts Debian's ca-certificates bundle
(smtp_tls_CAfile): Postfix trusts none by default (DEF_SMTP_TLS_CA_FILE
"", DEF_TLS_APPEND_DEF_CA 0). The levels may and encrypt only log the
verdict, so mail to recipients' MX is unchanged.
- The page: the select's fourth option, a help line under it, the lead
"over verified TLS", the list's tag "verified"; Help word for word with
the mockup; guide § Inbound relay, with a posttls-finger command to try
an upstream first.
Tests: TestVerifiedTLSNeedsTheUpstreamsName, TestRenderInboundMapsSecure,
TestUpstreamTLSModeSecure; schema tests at 14. e2e
inbound_upstream_verified_tls: an address refused, a name saved as
"[sink]:25 secure" in tls_policy, the page says verified, the CA file set
and present, and posttls-finger -l secure with it calls the stand's
self-signed port 25 "Untrusted" (the stand has no TLS upstream). make e2e
(65 passed) and go vet + go test (26 packages) on the test server for this
tree. Tried against the live upstream from the 2.14.5 container:
mc-ent.mixfed.ru gives "Verified TLS connection established".
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
mixandClaude Opus 5.5
6b4106f60e