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SPF Return-Path oder From Check?

Florian Bartsch

Moin zusammen,

kurze Nachfrage zum Thema SPF.

Aktuell hat uns ein Dienstleister eines Kunden darüber informiert, dass eventuell beim SPF Check nicht die "Return-Path" sondern die "From" Adresse geprüft wird, weshalb die Sophos weitergeleitete Mails fehlerhaft abweist?

 

Der Dienstleister des Kunden nutzt SRS (Sender Rewriting Scheme).

Kann da was dran sein oder sollte die UTM garantiert den "Return-Path" Eintrag verwenden?

 

Danke im Voraus für jede Rückmeldung und Hilfestellung!

LG,

Flo



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  • 0

    Hallo Flo,

    (Sorry, my German-speaking brain isn't creating thoughts at the moment. [:(])

    I think the Dienstleister may be confused.  The SPF-check is done during the SMTP transaction and is based on the domain name in the MAIL FROM command issued by the sending server.  A long-standing feature request for the UTM has been the ability to separately and additionally check the From field in an email message.  The From field is optional and is sent after the DATA command is issued by the sending server.

    MfG - Bob (Bitte auf Deutsch weiterhin.)

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    Hey Bob,

    yeah, that confused me, too.

    His argument depends specifically on "When using "SRS" for redirections, than the receiving system should recognise this and check the return-path instead on mailfrom".

    Or does UTM dont support SRS?

    Can you say something about that constellation?

    Thanks again.

     

     

  • 0 in reply to Florian Bartsch

    Flo,

    https://de.wikipedia.org/wiki/Sender_Rewriting_Scheme: Das Sender Rewriting Scheme (kurz SRS) ist eine Methode, um den Absender (genauer: den Envelope Sender) einer E-Mail so umzuschreiben, dass Sender Policy Framework (SPF) auch mit Mail-Umleitung funktioniert. 

    MfG - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0 in reply to BAlfson

    Moin Bob,

    nimm's mit nicht übel aber Google benutzen kann ich selbst und hab ich auch zu genüge getan.

    Das hilft leider nicht, um meine Fragestellung zu beantworten.

     

    @Douglas: Thank you. That informations are enough for now to answer my question about the functionality of SRS with a UTM. I dont think that there is a bug at this point because there are too less discussions for that theme.

     

    LG,

    Flo

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