242 lines
11 KiB
Bash
242 lines
11 KiB
Bash
#!/bin/bash
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# cloudflareMigrationDns.sh
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# Setzt DNS Records für Amazon SES Migration + Cloudflare
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# Unterstützt: DKIM, SPF (Merge), DMARC, MX (Safety Check), Autodiscover
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set -e
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# --- KONFIGURATION ---
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AWS_REGION=${AWS_REGION:-"us-east-2"}
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DRY_RUN=${DRY_RUN:-"false"}
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# Ziel für Autodiscover/IMAP (wohin sollen Mail-Clients verbinden?)
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# Standard: mail.deinedomain.tld. Kann überschrieben werden.
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TARGET_MAIL_SERVER=${TARGET_MAIL_SERVER:-"mail.${DOMAIN_NAME}"}
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# --- CHECKS ---
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if [ -z "$DOMAIN_NAME" ]; then echo "❌ Fehler: DOMAIN_NAME fehlt."; exit 1; fi
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if [ -z "$CF_API_TOKEN" ]; then echo "❌ Fehler: CF_API_TOKEN fehlt."; exit 1; fi
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if ! command -v jq &> /dev/null; then echo "❌ Fehler: 'jq' fehlt."; exit 1; fi
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if ! command -v aws &> /dev/null; then echo "❌ Fehler: 'aws' CLI fehlt."; exit 1; fi
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echo "============================================================"
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echo " 🛡️ DNS Migration Setup für: $DOMAIN_NAME"
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echo " 🌍 Region: $AWS_REGION"
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[ "$DRY_RUN" = "true" ] && echo " ⚠️ DRY RUN MODE - Keine Änderungen!"
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echo "============================================================"
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# 1. ZONE ID HOLEN
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echo "🔍 Suche Cloudflare Zone ID..."
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ZONE_ID=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones?name=$DOMAIN_NAME" \
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-H "Authorization: Bearer $CF_API_TOKEN" -H "Content-Type: application/json" | jq -r '.result[0].id')
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if [ "$ZONE_ID" == "null" ] || [ -z "$ZONE_ID" ]; then
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echo "❌ Zone nicht gefunden."
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exit 1
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fi
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echo " ✅ Zone ID: $ZONE_ID"
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# ------------------------------------------------------------------
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# FUNKTION: ensure_record
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# Prüft Existenz -> Create oder Update (je nach Typ)
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# ------------------------------------------------------------------
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ensure_record() {
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local type=$1
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local name=$2
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local content=$3
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local proxied=${4:-false}
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local priority=$5 # Optional für MX
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echo " ⚙️ Prüfe $type $name..."
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# Bestehenden Record suchen
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# Hinweis: Wir suchen exakt nach Name und Typ
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local search_res=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records?type=$type&name=$name" \
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-H "Authorization: Bearer $CF_API_TOKEN" -H "Content-Type: application/json")
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local rec_id=$(echo "$search_res" | jq -r '.result[0].id')
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local rec_content=$(echo "$search_res" | jq -r '.result[0].content')
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# JSON Body bauen
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if [ "$type" == "MX" ]; then
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json_data=$(jq -n --arg t "$type" --arg n "$name" --arg c "$content" --argjson p "$proxied" --argjson prio "$priority" \
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'{type: $t, name: $n, content: $c, ttl: 3600, proxied: $p, priority: $prio}')
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elif [ "$type" == "TXT" ]; then
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# Bei TXT Quotes escapen falls nötig, aber jq macht das meist gut
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json_data=$(jq -n --arg t "$type" --arg n "$name" --arg c "$content" --argjson p "$proxied" \
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'{type: $t, name: $n, content: $c, ttl: 3600, proxied: $p}')
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else
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json_data=$(jq -n --arg t "$type" --arg n "$name" --arg c "$content" --argjson p "$proxied" \
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'{type: $t, name: $n, content: $c, ttl: 3600, proxied: $p}')
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fi
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# LOGIK
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if [ "$rec_id" == "null" ]; then
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# --- CREATE ---
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if [ "$DRY_RUN" = "true" ]; then
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echo " [DRY] Würde ERSTELLEN: $content"
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else
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res=$(curl -s -X POST "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records" \
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-H "Authorization: Bearer $CF_API_TOKEN" -H "Content-Type: application/json" --data "$json_data")
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if [ "$(echo $res | jq -r .success)" == "true" ]; then
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echo " ✅ Erstellt."
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else
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echo " ❌ Fehler beim Erstellen: $(echo $res | jq -r .errors[0].message)"
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fi
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fi
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else
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# --- EXISTS ---
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if [ "$rec_content" == "$content" ]; then
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echo " 🆗 Identisch vorhanden. Überspringe."
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else
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# Inhalt anders -> Update oder Error?
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if [ "$type" == "MX" ] && [ "$name" == "$DOMAIN_NAME" ]; then
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echo " ⛔ MX Record existiert aber ist anders!"
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echo " Gefunden: $rec_content"
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echo " Erwartet: $content"
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echo " ABBRUCH: Bitte alten MX Record ID $rec_id manuell löschen."
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# Wir brechen hier nicht das ganze Script ab, aber setzen den neuen nicht.
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return
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fi
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# Für TXT (SPF/DMARC) oder CNAME machen wir ein UPDATE (Overwrite)
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if [ "$DRY_RUN" = "true" ]; then
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echo " [DRY] Würde UPDATEN von '$rec_content' auf '$content'"
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else
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res=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$rec_id" \
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-H "Authorization: Bearer $CF_API_TOKEN" -H "Content-Type: application/json" --data "$json_data")
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if [ "$(echo $res | jq -r .success)" == "true" ]; then
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echo " 🔄 Aktualisiert."
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else
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echo " ❌ Fehler beim Update: $(echo $res | jq -r .errors[0].message)"
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fi
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fi
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fi
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fi
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}
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# ------------------------------------------------------------------
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# SCHRITT 1: MAIL FROM ermitteln
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# ------------------------------------------------------------------
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echo ""
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echo "--- 1. MAIL FROM Domain ---"
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# Wenn von außen nicht gesetzt, versuche via AWS
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if [ -z "$MAIL_FROM_DOMAIN" ]; then
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echo " Variable MAIL_FROM_DOMAIN leer, frage AWS SES..."
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SES_JSON=$(aws sesv2 get-email-identity --email-identity $DOMAIN_NAME --region $AWS_REGION 2>/dev/null)
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MAIL_FROM_DOMAIN=$(echo "$SES_JSON" | jq -r '.MailFromAttributes.MailFromDomain')
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if [ "$MAIL_FROM_DOMAIN" == "null" ] || [ -z "$MAIL_FROM_DOMAIN" ]; then
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MAIL_FROM_DOMAIN="mail.$DOMAIN_NAME"
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echo " ⚠️ Keine MAIL FROM in SES gefunden. Fallback auf: $MAIL_FROM_DOMAIN"
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fi
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else
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echo " Nutze vorgegebene MAIL FROM: $MAIL_FROM_DOMAIN"
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fi
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# ------------------------------------------------------------------
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# SCHRITT 2: DKIM Records (CNAME)
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# ------------------------------------------------------------------
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echo ""
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echo "--- 2. DKIM Records ---"
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TOKENS=$(aws ses get-identity-dkim-attributes --identities $DOMAIN_NAME --region $AWS_REGION --query "DkimAttributes.\"$DOMAIN_NAME\".DkimTokens" --output text)
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for token in $TOKENS; do
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ensure_record "CNAME" "${token}._domainkey.$DOMAIN_NAME" "${token}.dkim.amazonses.com" false
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done
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# ------------------------------------------------------------------
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# SCHRITT 3: SES Verification (_amazonses)
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# ------------------------------------------------------------------
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echo ""
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echo "--- 3. SES Verification TXT ---"
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VERIF_TOKEN=$(aws ses get-identity-verification-attributes --identities $DOMAIN_NAME --region $AWS_REGION --query "VerificationAttributes.\"$DOMAIN_NAME\".VerificationToken" --output text)
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if [ "$VERIF_TOKEN" != "None" ]; then
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ensure_record "TXT" "_amazonses.$DOMAIN_NAME" "$VERIF_TOKEN" false
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fi
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# ------------------------------------------------------------------
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# SCHRITT 4: MAIL FROM Subdomain (MX + SPF)
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# ------------------------------------------------------------------
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echo ""
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echo "--- 4. MAIL FROM Subdomain ($MAIL_FROM_DOMAIN) ---"
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# MX für die Subdomain (feedback loop)
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ensure_record "MX" "$MAIL_FROM_DOMAIN" "feedback-smtp.$AWS_REGION.amazonses.com" false 10
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# SPF für die Subdomain (strikte SES Regel)
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ensure_record "TXT" "$MAIL_FROM_DOMAIN" "v=spf1 include:amazonses.com ~all" false
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# ------------------------------------------------------------------
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# SCHRITT 5: Root Domain SPF (Merge Logic)
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# ------------------------------------------------------------------
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echo ""
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echo "--- 5. Root Domain SPF ---"
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if [ -n "$OLD_PROVIDER_SPF" ]; then
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# Merge: SES + Alter Provider
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FINAL_SPF="v=spf1 include:amazonses.com $OLD_PROVIDER_SPF ~all"
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echo " ℹ️ Modus: Migration (SES + Alt)"
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else
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# Nur SES
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FINAL_SPF="v=spf1 include:amazonses.com ~all"
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echo " ℹ️ Modus: SES only"
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fi
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ensure_record "TXT" "$DOMAIN_NAME" "$FINAL_SPF" false
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# ------------------------------------------------------------------
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# SCHRITT 6: Root Domain MX (Safety First)
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# ------------------------------------------------------------------
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echo ""
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echo "--- 6. Root Domain MX ---"
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# Hier wollen wir den Inbound SMTP von AWS (falls man AWS WorkMail nutzt oder DMS via AWS ingress)
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# WARTE: Du nutzt DMS. Dein DMS hat vermutlich eine eigene IP/Hostname (z.B. mail.buddelectric.net).
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# Wenn du SES NUR ZUM SENDEN nutzt, darfst du den Root MX NICHT auf Amazon ändern!
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#
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# Annahme: Du willst den MX für den Empfang setzen.
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# Da du oben "feedback-smtp" erwähnt hast, geht es wohl um den SES Return-Path.
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# Aber der "echte MX" für die Domain ($DOMAIN_NAME) zeigt auf DEINEN Mailserver (DMS).
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#
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# Falls du den MX auf deinen DMS Server zeigen lassen willst:
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TARGET_MX=${TARGET_MX:-"mail.$DOMAIN_NAME"}
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echo " ℹ️ Ziel-MX ist: $TARGET_MX"
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# HINWEIS: MX Records brauchen oft einen Hostnamen, keine IP.
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# Wir prüfen, ob ein MX existiert.
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ensure_record "MX" "$DOMAIN_NAME" "$TARGET_MX" false 10
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# ------------------------------------------------------------------
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# SCHRITT 7: DMARC
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# ------------------------------------------------------------------
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echo ""
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echo "--- 7. DMARC ---"
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ensure_record "TXT" "_dmarc.$DOMAIN_NAME" "v=DMARC1; p=none; rua=mailto:postmaster@$DOMAIN_NAME" false
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# ------------------------------------------------------------------
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# SCHRITT 8: Autodiscover / Autoconfig
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# ------------------------------------------------------------------
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echo ""
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echo "--- 8. Autodiscover / Autoconfig ---"
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# Ziel ist meist der IMAP/SMTP Server
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echo " ℹ️ Ziel für Clients: $TARGET_MAIL_SERVER"
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ensure_record "CNAME" "autodiscover.$DOMAIN_NAME" "$TARGET_MAIL_SERVER" false
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ensure_record "CNAME" "autoconfig.$DOMAIN_NAME" "$TARGET_MAIL_SERVER" false
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# Füge das zu deinem Skript hinzu (Schritt 9 optional):
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# ------------------------------------------------------------------
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# SCHRITT 9: SRV Records (Service Discovery)
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# ------------------------------------------------------------------
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echo ""
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echo "--- 9. SRV Records (Service Discovery) ---"
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# Das hilft Outlook, direkt "email-srvr.com" zu nutzen statt "mail.domain.tld"
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# Format: _service._proto.name TTL class SRV priority weight port target
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# IMAP SRV
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ensure_record "SRV" "_imap._tcp.$DOMAIN_NAME" "0 5 143 $TARGET_MAIL_SERVER" false
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# IMAPS SRV (Port 993)
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ensure_record "SRV" "_imaps._tcp.$DOMAIN_NAME" "0 5 993 $TARGET_MAIL_SERVER" false
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# SUBMISSION SRV (Port 587)
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ensure_record "SRV" "_submission._tcp.$DOMAIN_NAME" "0 5 587 $TARGET_MAIL_SERVER" false
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echo " ✅ SRV Records gesetzt (Server: $TARGET_MAIL_SERVER)"
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echo ""
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echo "✅ Fertig." |