--- title: "Kostenlose E-Mail-Sicherheitstools | AutoSPF" description: "Kostenlose DNS-Lookup-Tools für die E-Mail-Authentifizierung. Prüfen Sie SPF-Einträge, validieren Sie DMARC-Richtlinien, schlagen Sie DKIM-Schlüssel nach, testen Sie BIMI, MTA-STS und TLS-RPT - alles an einem Ort." image: "https://autospf.com/images/og-default.png" canonical: "https://autospf.com/de/tools/" --- 100 % kostenlos - kein Konto erforderlich # Kostenlose E-Mail-Sicherheits- Tools Prüfen Sie SPF-, DMARC-, DKIM-, BIMI-, MTA-STS- und TLS-RPT-Einträge für jede Domain. Sofortige Ergebnisse, keine Anmeldung. [ Meistgenutzt SPF-Eintrag-Checker Analysieren Sie Ihren SPF-Eintrag, zählen Sie DNS-Lookups und visualisieren Sie den vollständigen Include-Baum. Sehen Sie, ob Sie über dem 10-Lookup-Limit liegen. Tool nutzen ](/de/tools/spf-checker/)[ Neu Domain-Auth-Checker Prüfen Sie alle 5 E-Mail-Authentifizierungsprotokolle auf einmal - SPF, DMARC, BIMI, MTA-STS und TLS-RPT. Erhalten Sie einen Gesamt-Gesundheitswert. Tool nutzen ](/de/tools/domain-auth-checker/)[ DMARC-Eintrag-Checker Validieren Sie Ihre DMARC-Richtlinie, prüfen Sie die Ausrichtungseinstellungen und sehen Sie, ob die Aggregatberichterstattung korrekt konfiguriert ist. Tool nutzen ](/de/tools/dmarc-checker/)[ Neu DMARC Report Analyzer Legen Sie einen DMARC-Aggregatbericht (XML oder .gz) ab und sehen Sie sofort Absender, Erfolgsraten, Ausrichtung und Details je Eintrag. In Ihrem Browser verarbeitet. Tool nutzen ](/de/tools/dmarc-report-analyzer/)[ DKIM-Eintrag-Lookup Entdecken Sie DKIM-Einträge automatisch über mehr als 50 Selektoren. Identifizieren Sie SendGrid, Google Workspace, Microsoft 365 und über 100 Anbieter - oder schlagen Sie einen bestimmten Selektor nach. Tool nutzen ](/de/tools/dkim-lookup/)[ BIMI-Checker Prüfen Sie Ihren BIMI-Eintrag, sehen Sie eine Vorschau Ihres Markenlogos und verifizieren Sie den VMC-Zertifikatsstatus für jede Domain. Tool nutzen ](/de/tools/bimi-checker/)[ MTA-STS-Checker Validieren Sie MTA-STS-DNS-Einträge und Richtliniendateien. Prüfen Sie den TLS-Durchsetzungsmodus, die autorisierten MX-Hosts und die Cache-Dauer der Richtlinie. Tool nutzen ](/de/tools/mta-sts-checker/)[ Neu SPF-Eintrag-Generator Erstellen Sie einen gültigen SPF-Eintrag in 60 Sekunden. Wählen Sie Ihre E-Mail-Anbieter, fügen Sie benutzerdefinierte IPs hinzu, wählen Sie Ihre Richtlinie - kopieren Sie das Ergebnis in Ihr DNS. Tool nutzen ](/de/tools/spf-record-generator/)[ SPF-Eintrag-Lookup Schlagen Sie den SPF-Eintrag jeder Domain aus dem Live-DNS nach. Sehen Sie den rohen Eintrag, erweitern Sie verschachtelte Includes und zählen Sie Lookups. Tool nutzen ](/de/tools/spf-record-lookup/)[ SPF-Validator Validieren Sie jeden SPF-Eintrag auf Syntaxfehler, DNS-Lookup-Verstöße, void Lookups und vollständige RFC-7208-Konformität. Tool nutzen ](/de/tools/spf-validator/)[ SPF-Glossar Referenzleitfaden für SPF-Mechanismen, -Qualifizierer und -Modifikatoren. Verstehen Sie ip4, include, redirect, all und mehr. Tool nutzen ](/de/spf-glossar/)[ Neu E-Mail-Header-Analyzer Fügen Sie rohe E-Mail-Header ein und sehen Sie sofort den vollständigen Zustellpfad mit Zeitverzögerungen je Hop, zusammen mit SPF-, DKIM- und DMARC-Ergebnissen. Gehostet auf Mailflow Monitoring. Tool nutzen ](https://mailflowmonitoring.com/tools/email-header-analyzer/?utm%5Fsource=autospf&utm%5Fmedium=tools%5Fdirectory) Protokoll-Referenz ## Was diese Tools prüfen SPF TXT @ domain Welche Server als Ihre Domain E-Mails senden dürfen DMARC TXT @ \_dmarc.domain Was zu tun ist, wenn SPF oder DKIM fehlschlägt DKIM TXT @ selector.\_domainkey.domain Kryptografische Verifizierung der E-Mail-Signatur BIMI TXT @ default.\_bimi.domain Anzeige des Markenlogos in E-Mail-Clients MTA-STS TXT @ \_mta-sts.domain + Richtliniendatei TLS-Verschlüsselung für eingehende E-Mails erzwingen TLS-RPT TXT @ \_smtp.\_tls.domain TLS-Verbindungsfehler melden ## Zu viele DNS-Lookups? AutoSPF flacht Ihren SPF-Eintrag automatisch ab und hält ihn innerhalb des 10-Lookup-Limits. Die Einrichtung dauert 60 Sekunden. [Pläne & Preise ansehen→](/de/preise/) Rated 5/5 on G2 · Trusted since 2018 ## Vertraut von über 2.000 Unternehmen ### "Helped us go beyond capacity" > AutoSPF did exactly as described, it helped us get past our 10 lookup limit. Afterwards, we hit another limit regarding overall capacity and when contacted, they quickly provided us with a new solution to eliminate capacity issues entirely going forward, so now we can add as many SPF records as needed. They also provided us with a personalized support video explaining their new method in its entirety using our instance as the example. VU Verified User Financial Services · Mid-Market (51-1000 emp.) ### "Great service and great support" > AutoSPF was easy to initially set up on our own and a great cost effective entry into spf flattening. Needed our first support assistance today and got great response including a video demonstrating the issue I was trying to solve, a quick fix, and more detailed followup. GF Greg F. Mid-Market (51-1000 emp.) ### "Robust and useful product with incredible support" > AutoSPF is a simple tool to solve a significant problem. It does it so very well without any issues. Additionally, the support is very professional and goes above and beyond to help resolve any email-related issues for their customers. VU Verified User Insurance · Mid-Market (51-1000 emp.) [Read our reviews on G2 ](https://www.g2.com/products/autospf/reviews) ```json {"@context":"https://schema.org","@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com","logo":{"@type":"ImageObject","url":"https://autospf.com/images/autospf-logo.png"},"description":"Automatic SPF flattening and email authentication management. 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Resolve SPF lookup limits, flatten SPF records, and maintain email deliverability across all your domains.","parentOrganization":{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138883901","name":"DuoCircle LLC","url":"https://www.duocircle.com","sameAs":["https://www.wikidata.org/wiki/Q138883901","https://www.crunchbase.com/organization/duocircle-llc","https://www.linkedin.com/company/duocircle","https://github.com/duocircle"],"subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]}}} ``` ```json {"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Sind diese E-Mail-Sicherheitstools kostenlos?","acceptedAnswer":{"@type":"Answer","text":"Ja. Alle DNS-Lookup- und Validierungstools auf dieser Seite sind vollständig kostenlos nutzbar, kein Konto erforderlich. Prüfen Sie SPF-, DMARC-, BIMI-, MTA-STS- und TLS-RPT-Einträge für jede Domain sofort."}},{"@type":"Question","name":"Was ist der Domain-Authentifizierungs-Checker?","acceptedAnswer":{"@type":"Answer","text":"Der Domain-Authentifizierungs-Checker testet alle 5 E-Mail-Authentifizierungsprotokolle (SPF, DMARC, BIMI, MTA-STS, TLS-RPT) für jede Domain in einem einzigen Lookup. Er gibt Ihnen einen Gesamtwert und spezifische Erkenntnisse für jedes Protokoll."}},{"@type":"Question","name":"Wie funktioniert der SPF-Eintrag-Checker?","acceptedAnswer":{"@type":"Answer","text":"Der SPF-Checker ruft den SPF-TXT-Eintrag Ihrer Domain ab, löst rekursiv alle include-Mechanismen auf, zählt DNS-Lookups gegen das RFC-7208-Limit von 10 und baut einen visuellen Baum auf, der genau zeigt, wie Ihr SPF-Eintrag strukturiert ist."}}]} ``` ```json {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://autospf.com/"},{"@type":"ListItem","position":2,"name":"Tools","item":"https://autospf.com/de/tools/"}]} ``` ```json {"@context":"https://schema.org","@type":"Product","name":"AutoSPF","url":"https://autospf.com","aggregateRating":{"@type":"AggregateRating","ratingValue":5,"reviewCount":21,"bestRating":5,"worstRating":1},"review":[{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":5,"bestRating":5},"author":{"@type":"Person","name":"Verified User","jobTitle":"Financial Services"},"datePublished":"2025-07-31","reviewBody":"AutoSPF did exactly as described, it helped us get past our 10 lookup limit. Afterwards, we hit another limit regarding overall capacity and when contacted, they quickly provided us with a new solution to eliminate capacity issues entirely going forward, so now we can add as many SPF records as needed. They also provided us with a personalized support video explaining their new method in its entirety using our instance as the example.","name":"Helped us go beyond capacity","publisher":{"@type":"Organization","name":"G2","url":"https://www.g2.com"}},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":5,"bestRating":5},"author":{"@type":"Person","name":"Greg F."},"datePublished":"2023-07-26","reviewBody":"AutoSPF was easy to initially set up on our own and a great cost effective entry into spf flattening. Needed our first support assistance today and got great response including a video demonstrating the issue I was trying to solve, a quick fix, and more detailed followup.","name":"Great service and great support","publisher":{"@type":"Organization","name":"G2","url":"https://www.g2.com"}},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":5,"bestRating":5},"author":{"@type":"Person","name":"Verified User","jobTitle":"Insurance"},"datePublished":"2022-01-12","reviewBody":"AutoSPF is a simple tool to solve a significant problem. It does it so very well without any issues. Additionally, the support is very professional and goes above and beyond to help resolve any email-related issues for their customers.","name":"Robust and useful product with incredible support","publisher":{"@type":"Organization","name":"G2","url":"https://www.g2.com"}}]} ```