inbound-upstream-result: the upstream's answer in the Inbound log

The owner, 2026-10-16: the Inbound log lacks the upstream's answer - "Не
понятна судьба письма: принято, отклонено, хост не доступен"; the result
in the row only, a page per message later if needed. Mockups 5348330 and
46b90d2, plan 295d72e.

- Migration 0012: inbound_spam_log gains queue_id, upstream_status ('',
  queued, held, sent, deferred, bounced; CHECK), upstream_relay,
  upstream_reply, upstream_at, and a partial index on queue_id. Schema 12.
- The inbound journal milter writes an accepted row with the queue id of
  end-of-message and "queued" ("held" when the filter had it held), the
  recipient as Postfix logs it (recipientAsLogged), after detaching older
  rows of a queue id Postfix uses again; no queue id, no result.
- The tailer: a delivery line no send-log row took goes to the journal -
  status, relay= ("" for none), the reply after the first status=, cut to
  255 printable bytes, the line's time; queued/held/deferred rows only,
  sent and bounced final. qmgr's expiry makes them bounced, keeping the
  last reply. cleanup's "removed (" detaches rows of a message never
  queued. Addresses in delivery lines are read by Postfix's quoting
  (loggedAddress): a quoted RCPT TO cannot end one early.
- The page: an Upstream column - a plain tag for queued and held, else a
  tag opening the host, the reply, when and what follows; "—" for refused
  mail and older rows. Help (word for word with the mockup), guide,
  architecture, security, schema-migrations, CHANGELOG.

Reviewed before the commit (technical and security, 2026-10-16); the plan
lists each finding and what it became.

Tests: store (results, finality, expiry, held, a reused id, the queue-id
index in every plan), milter (queue id, held, quoted recipient, no {i}),
logtail (relay and reply, a forged quoted recipient, Run hands the journal
what the send log did not take, cleanup's removal), view (the column, held,
null sender), e2e (both relayed messages sent with the sink's 250; an
upstream refusing connections deferred with the reason and no host, then
expired to bounced; the refused row has none). go vet + go test (26
packages) and make e2e on the test server for this tree.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/logtail/inbound.go

@@ -11,13 +11,47 @@ import (
 )
 
 // InboundStore is what the tailer needs of the inbound antispam journal:
-// writing the rows for refused mail, knowing which domains are inbound, and
-// pruning. *store.Store satisfies it.
+// writing the rows for refused mail, knowing which domains are inbound,
+// putting the upstream's answers on the rows of accepted mail, and pruning.
+// *store.Store satisfies it.
 type InboundStore interface {
 	InsertInboundSpam(e store.InboundSpamEntry) error
 	InsertInboundSpamOnce(e store.InboundSpamEntry) (bool, error)
 	IsInboundDomain(name string) (bool, error)
 	PruneInboundSpam(cutoff time.Time, keep int) (int64, error)
+	UpdateInboundUpstream(queueID, recipient, status, relay, reply string, at time.Time) (int64, error)
+	ExpireInboundUpstream(queueID string, at time.Time) (int64, error)
+	ForgetInboundQueueID(queueID string) error
+}
+
+// upstream puts a delivery line's result on the journal rows of a message
+// accepted on port 25 (inbound-upstream-result). The tailer offers it every
+// delivery line no send-log row took: the rows of that queue id and recipient
+// take it, and a line of any other mail - the panel's own, a bounce Postfix
+// sends back to a stranger - matches none. relay "none" is a line written
+// without a session (Postfix 3.10.13, src/smtp/smtp_trouble.c:273, 421: the
+// host is then only in the reply), kept as "". The reply is the upstream's
+// text, or Postfix's own about a host it could not reach, cut and made
+// printable like a refusal's reason. One update per attempt, never a row of
+// its own: the journal's caps stand.
+func (j *inboundJournal) upstream(line string, now time.Time, queueID, recipient, status string) {
+	at, rest := lineTime(line, now)
+	relay, reply := deliveryReply(rest)
+	if relay == "none" {
+		relay = ""
+	}
+	if _, err := j.st.UpdateInboundUpstream(queueID, recipient, status, printable(relay, inboundDetailMax),
+		printable(reply, store.UpstreamReplyMax), at); err != nil {
+		log.Printf("log-tailer: inbound journal: upstream %s/%s -> %s: %v", queueID, recipient, status, err)
+	}
+}
+
+// expired makes the rows of a port-25 message Postfix gave up on bounced.
+func (j *inboundJournal) expired(line string, now time.Time, queueID string) {
+	at, _ := lineTime(line, now)
+	if _, err := j.st.ExpireInboundUpstream(queueID, at); err != nil {
+		log.Printf("log-tailer: inbound journal: expire %s: %v", queueID, err)
+	}
 }
 
 // Inbound turns on the inbound half of the tailer: journal rows for mail that
@@ -153,6 +187,13 @@ func (j *inboundJournal) handle(line string, now time.Time, catchingUp bool) {
 	}
 	if m := inboundForgetRe.FindStringSubmatch(rest); m != nil {
 		delete(j.port25, m[1]+m[2]+m[3])
+		// A queue file cleanup removed was never queued: rows the milter wrote
+		// for it will get no delivery line (store.ForgetInboundQueueID).
+		if m[3] != "" {
+			if err := j.st.ForgetInboundQueueID(m[3]); err != nil {
+				log.Printf("log-tailer: inbound journal: forget %s: %v", m[3], err)
+			}
+		}
 		return
 	}
 	m := inboundRejectRe.FindStringSubmatch(rest)