Email to members not working

Hello FTH support,

This is the second week that I have been unable to send an email to my members.

Is there something that I'm doing wrong?

This is the error message below.

Albert Ho
Club President
Beaches Speeches
Club # 646060

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Your message wasn't delivered to members@beachesspeeches.org because the address couldn't be found, or is unable to receive mail.
The response was:
550-5.7.1 <members@beachesspeeches.org>: Recipient address rejected: 550 Invalid recipient

Reporting-MTA: dns; googlemail.com
Received-From-MTA: dns; alberth@gmail.com
Arrival-Date: Thu, 29 Mar 2018 06:45:40 -0700 (PDT)
X-Original-Message-ID: <20C665D1-6ABD-49D7-B14A-555DF5EC4077@gmail.com>

Final-Recipient: rfc822; members@beachesspeeches.org
Action: failed
Status: 5.0.0
Remote-MTA: dns; mail.beachesspeeches.org. (64.26.60.153, the server for the
domain beachesspeeches.org.)
Diagnostic-Code: smtp; 550-5.7.1 <members@beachesspeeches.org>: Recipient address rejected:
550 Invalid recipient
Last-Attempt-Date: Thu, 29 Mar 2018 06:45:45 -0700 (PDT)

Your email is not setup correctly in your DNS at your registrar.
this is incorrect
mail.beachesspeeches.org. 14399 IN A 64.26.60.153
you need to change it to
mail.beachesspeeches.org. 14399 IN A 50.19.253.65