Subject: Mail delivery failed: returning message to sender
From: [email-masked]
To: [email-masked]
Date: Tue, 21 Apr 2020 11:36:49 +0000

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  [email-masked]
    SMTP error from remote mail server after RCPT TO:<[email-masked]>:
    host poolmx.dsmail.es [40.114.141.82]: 554 5.7.1 Service unavailable; Client host [62.36.20.214] blocked using b.barracudacentral.org; http://www.barracudanetworks.com/reputation/?pr=1&ip=62.36.20.214