554 Sending address not accepted due to spam filter

Discussion in 'Mail Server Support' started by popowich, Oct 24, 2013.

  1. popowich

    popowich EQ Forum Admin Staff Member

    Aug 12, 2008
    Likes Received:

    Did you get the error "554 Sending address not accepted due to spam filter" ?

    This is a tricky error that can be difficult to troubleshoot, but you can start by trying the following:

    • Verify that your sending IP address and domain name are not on any blacklists
    • Verify that you have a valid and correctly formatted SPF record
    • Check your outgoing mail server logs for signs of abuse
    • Try calling the person you are trying to reach and get a more specific error for the error from their mail support
    A useful tool for checking your blacklist status - Email Blacklist Check - See if your server is blacklisted

    Check your IP reputation sender score here - https://senderscore.org/

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