INVALID_MSGID Message-Id is not valid, according to RFC 2822

  • I tried to send test message to https://www.mail-tester.com/

    I got results 8.3/10.
    Biggest impact was this:
    SpamAssassin thinks you can improve
    The famous spam filter SpamAssassin. Score: -1.7.
    A score below -5 is considered spam.

    -1.167 INVALID_MSGID Message-Id is not valid, according to RFC 2822

    We use sendgrid and I asked this from their support and they told me that this is related to wordpress.

    Is this something that can fixed? Or is this problem more of a wordpress problem?

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Viewing 3 replies - 1 through 3 (of 3 total)
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