Mail Delivery System <MAILER-DAEMON@z9m9z.htt-consult.com> · Mon, 7 Aug 2017 12:26:56 -0400 (EDT)

This is the mail system at host z9m9z.htt-consult.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<patrick@laimbock.com>: host mx1.mailguard.nl[77.72.146.137] said: 554 5.7.1
    Service unavailable; Client host [50.253.254.3] blocked using
    b.barracudacentral.org; Client host blocked using Barracuda Reputation, see
    http://www.barracudanetworks.com/reputation/?r=1&ip=50.253.254.3 (in reply
    to RCPT TO command)

Subject:	Undelivered Mail Returned to Sender
Date:	Mon, 7 Aug 2017 12:26:56 -0400 (EDT)
From:	Mail Delivery System <MAILER-DAEMON@z9m9z.htt-consult.com>
To:	rgm@htt-consult.com