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cannot send mail to mailbox.org : blocked

8830157 shared this question 2 months ago
Need Answer

People want to send mail to mailbox.org and get blocked (see below). How can I open the servers, e-mail addresses?

<a class="moz-txt-link-rfc2396E" href="mailto:mymailbox@mailbox.org"><mymailbox@mailbox.org></a>: host mx2.mailbox.org[] said: 554 5.7.1 Service
    unavailable; Client host [] blocked by RBL; Client host blocked
    using Barracuda Reputation, see
    <a class="moz-txt-link-freetext" href="http://www.barracudanetworks.com/reputation/?r=1&ip=">http://www.barracudanetworks.com/reputation/?r=1&ip=</a>; (in reply
    to RCPT TO command)