release: 1.7.0: DMARC aggregate report ingest and panel summaries

Optional DMARC aggregate report ingest: accept `rua=` mail on port 25, parse gzip/XML into SQLite, and show summaries in the panel.
Added:
  - Optional DMARC aggregate report ingest (`DMARC_REPORTS_ENABLE`): port 25
  - Per-domain **SelfPost hosted** `rua=` mode when ingest is enabled

Full detail: CHANGELOG.md (1.7.0).

internal/web/handlers/handlers_settings.go

@@ -63,6 +63,10 @@ func (h *Handlers) renderSettings(w http.ResponseWriter, r *http.Request, status
 	data["Flash"] = settingsFlash(r)
 	data["L1Messages"] = h.l1Messages()
 	data["L1Window"] = h.l1Window()
+	data["DMARCIngestEnabled"] = h.cfg.DMARCEnabled
+	if h.dmarc != nil && h.cfg.DMARCEnabled {
+		data["HostedReportAddress"] = h.dmarc.DefaultHostedSuggestion()
+	}
 	h.view.Render(w, status, "settings", data)
 }
 
@@ -220,6 +224,12 @@ func (h *Handlers) submitSettings(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	if emailChanging && h.dmarc != nil && h.dmarc.Enabled() {
+		if err := h.dmarc.Resync(); err != nil {
+			logf("panel: settings: dmarc resync: %v", err)
+		}
+	}
+
 	if token, ok := h.auth.SessionToken(r); ok {
 		if renaming {
 			h.auth.RenameSession(token, username)