Broken distribution lists and forwarding email addresses

We have had problems with the email forwarding addresses for our site. Here is the automatic response to the email I sent to my role, vpe@friendswoodtoastmasters.com

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


<vpe@friendswoodtoastmasters.com>: host smtp.secureserver.net[68.178.213.37]
said: 550 5.1.1 <vpe@friendswoodtoastmasters.com> Recipient not found.
< x.co/irbounce > (in reply to RCPT TO command)
Reporting-MTA: dns; ms11p00im-qufo17291201.me.com
X-Postfix-Queue-ID: 7DBABBC024F
X-Postfix-Sender: rfc822; matthew.c.henderson@me.com
Arrival-Date: Tue, 9 Apr 2019 16:26:39 +0000 (UTC)

Final-Recipient: rfc822; vpe@friendswoodtoastmasters.com
Original-Recipient: rfc822;vpe@friendswoodtoastmasters.com
Action: failed
Status: 5.1.1
Remote-MTA: dns; smtp.secureserver.net
Diagnostic-Code: smtp; 550 5.1.1 <vpe@friendswoodtoastmasters.com> Recipient
not found. < x.co/irbounce >

From: Matthew C Henderson <matthew.c.henderson@me.com>
Subject: Test email 1
Date: April 9, 2019 at 11:26:32 AM CDT
To: vpe@friendswoodtoastmasters.com


Here goes

We have a custom DNS address for our site

Your dns mx records are set up incorrectly. Please see documentation
support.toastmastersclubs.org/doc/item/dns-settings-overview

delete
friendswoodtoastmasters.com. 3599 IN MX 10 mailstore1.secureserver.net.
friendswoodtoastmasters.com. 3599 IN MX 0 smtp.secureserver.net.

Add
mail IN A 50.19.253.65

friendswoodtoastmasters.com. 3599 IN MX 10 mail.friendswoodtoastmasters.com