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SPF: Mechanism/ptr - SMTP+SPF: Häufig gestellte Fragen - SPF - SPF Record Using mx ptr parameters in DNS SPF record - Server Fault SPF records DNS SPF – Hetzner DokuWiki Do I need to Set-up PTR record in SPF Setting? - Server Fault Sender Policy Framework – Wikipedia SPF Record Syntax - HOWTO – Define an SPF Record – ZYTRAX HOWTO - Define an SPF Record. This page defines configuration of a Sender Policy Framework (SPF) @ IN TXT v=spf1 ptr -all ; the SPF Record Syntax: Note: This page v=spf1 ptr -all A domain which directly controls all its machines (unlike a dialup or broadband ISP) allows all Das Sender Policy Framework SPF als Schutz vor Spamversand I have set-up the RDNS from my hosting provider for the ip address to resolve to . After that, do I also need to add the PTR records Publishing an SPF record in your “” DNS records tells the world which server IP addresses are authorized to send emails v=spf1 include: Q. Ergebnis-Code Beschreibung + Pass: die Direktive definiert autorisierte Sender; dies ist der Standard, d. h. ist kein Qualifikator angegeben, so wird Hm, eine Zeile? Wie schaut die denn aus? Hier sind drei Beispiele. IN TXT v=spf1 mx -all IN TXT v=spf1 ptr Mechanism/ptr: The ptr mechanism . ptr ptr:<domain> The hostname or hostnames for the client IP are looked up using PTR queries. v=spf1 ptr -all I'm trying to set up my SPF record to validate properly both for emails sent through Google Apps and for those sent from MailChimp's servers. MailChimp's @ IN TXT v=spf1 mx ip4: a: -all es sind alle Rechner, für die MX-Records in dieser Domäne existieren, gültig