• Hi Alejandro,

    I get a lot of ‘Message Delivery Failure’ messages from the booking emails.
    The reason of this, it has 2 Message-ID’s in the headers.

    Reason: 550 Messages should have one or no Message-ID headers, not 2.

    Example:
    (for safety reasons i changed the emailaddres of my client)

    Received: from w01.hostingenregistratie.nl ([136.144.141.50]) by hostingenregistratie.nl with
    MailEnable ESMTPS (version=TLS1_2 cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P521); Fri, 25 Oct 2019 16:40:28 +0200
    Received: from w104.hostingenregistratie.nl ([149.210.227.197]) by hostingenregistratie.nl with
    MailEnable ESMTP; Fri, 25 Oct 2019 16:40:06 +0200
    Received: from W104 ([127.0.0.1]) by hostingenregistratie.nl with
    MailEnable ESMTP; Fri, 25 Oct 2019 16:40:05 +0200
    Subject: Uw reservering bij MyRestaurant is aangevraagd
    To: xxxx@xxxx.com
    X-PHP-Originating-Script: 0:class-phpmailer.php
    Date: Fri, 25 Oct 2019 14:40:05 +0000
    From: MyRestaurant <xxxx@xxxx.com>
    Reply-To: =?utf-8?Q?MyRestaurant?= <xxxx@xxxx.com>
    Message-ID: <448c4283e30975adf454c849d53d7f1e@www.MyRestaurant.nl>
    X-Mailer: PHPMailer 5.2.22 (https://github.com/PHPMailer/PHPMailer)
    MIME-Version: 1.0
    Content-Type: text/html; charset=utf-8
    Message-ID: <C8B5DD77CCDB4E98AC616035715C07DD.MAI@hostingenregistratie.nl>
    Date: Fri, 25 Oct 2019 16:40:05 +0200
    X-ME-CountryOrigin: NL
    X-Envelope-Sender: xxxx@xxxx.com
    X-ME-Bayesian: 0.000000

    Do you know where I can delete one (or both) of these Message-ID headers?

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