Gmail - 'From' header is missing. Yahoo - empty DATA not allowed

Discussion in 'General' started by buhler, Aug 17, 2017.

  1. buhler

    buhler Member

    Good morning,
    I started getting error message when delivering emails to yahoo and gmail.
    I have not changed any settings on my server.
    I have SPF and DKIM enabled.
    A friend told me he also started getting these errors on his server with ISPCONFIG.
    The error logs have this pattern:

    <[email protected]>: host[] said:
    550-5.7.1 [ 11] Our system has detected that this message
    is 550-5.7.1 not RFC 5322 compliant: 550-5.7.1 'From' header is missing.
    550-5.7.1 To reduce the amount of spam sent to Gmail, this message has been
    550-5.7.1 blocked. Please visit 550-5.7.1 550 5.7.1 and
    review RFC 5322 specifications for more information. g33si684431ywk.477 -
    gsmtp (in reply to end of DATA command)

    <[email protected]>: host[] said: 554
    Transaction failed: empty DATA not allowed (in reply to end of DATA

    Does this happen to anyone else?
    Does anyone have a solution?
    Thank you

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