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E-Mail an Versender mit geblockten Inhalten

Jörg Paßmann

Hallo zusammen,

ich bin leider noch nicht fündig geworden und habe daher die folgende Frage:

Wir blocken zum Beispiel .doc-Files als Anhang. Besteht die Möglichkeit dem Versender eine automatisierte E-Mail über die Ablehnung zu versenden?

Vielen Dank und guten Wochenstart!



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    Any form of email response to a sender is discouraged by the experts, because it can cause backscatter.   If the spammer uses a fraudulent identity to hammer you, your responses can be used to hammer the person whose identity he has borrowed, and maybe get you blacklisted as a result.  To prevent this, the ideal is for the perimeter spam filter to reject the message, and let that be the only feedback.   

    Notwithstanding what I just said, this is how UTM behaves:

    If a failure is detected after the message is accepted, there is no possibility to notify using rejection.  In these cases, UTM will send a non-delivery report (NDR).   I would prefer to have control over this behavior, but there is not one.   I have see this on a mail server where recipient verification cannot be done using LDAP during message reception.

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    Any form of email response to a sender is discouraged by the experts, because it can cause backscatter.   If the spammer uses a fraudulent identity to hammer you, your responses can be used to hammer the person whose identity he has borrowed, and maybe get you blacklisted as a result.  To prevent this, the ideal is for the perimeter spam filter to reject the message, and let that be the only feedback.   

    Notwithstanding what I just said, this is how UTM behaves:

    If a failure is detected after the message is accepted, there is no possibility to notify using rejection.  In these cases, UTM will send a non-delivery report (NDR).   I would prefer to have control over this behavior, but there is not one.   I have see this on a mail server where recipient verification cannot be done using LDAP during message reception.

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