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  3. Mail delivery failed: returning message to sender

Mail delivery failed: returning message to sender

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  • murgeroM Offline
    murgeroM Offline
    murgero
    App Dev
    wrote on last edited by
    #1

    So I've been getting an increasing amount of email being "returned to sender" however I've never sent them. I also have confirmed the server never sent them either. This is clearly a spoofing issue. Thankfully a lot more email services use dmarc, dkim, and spf checking (as seen in the error below).

    My question to y'all is: have you seen an increase in this behavior recently?

    Email is usually similar to the below, but with data not redacted. Usually a one word subject line and one word in the email.

    This message was created automatically by mail delivery software.
    
    A message that you sent could not be delivered to one or more of its
    recipients. This is a permanent error. The following address(es) failed:
    
    SMTP error from remote mail server after end of data:
    554 5.7.9 Message not accepted for policy reasons.
    
    
    Action: failed
    Final-Recipient: 
    Status: 5.0.0
    Remote-MTA: 
    Diagnostic-Code: smtp; 554 5.7.9 Message not accepted for policy reasons.
    
    Subject: 
    
    From: 
    
    Date: 
    
    To: 
    
    

    --
    https://urgero.org
    ~ Professional Nerd. Freelance Programmer. ~

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