==== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version: Ubuntu 16.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySql
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

This was a clean install to a virgin system.

Finally getting access to roundcube, iredadmin, etc. using either IP or FQDN (yah!).
When I try to send an email from the system to one of my accounts hosted with GoDaddy from Roundcube, I get (even before the message is 'sent') the error:

SMTP Error (451): Failed to add recipient "andrew@mygodaddydomain.com" (4.3.5 <andrew@mygoadddydomain.com>: Recipient address rejected: Server configuration problem).

Any thoughts on this?  Is it still a DNS problem?

My VPS hostname is server.mygodaddydomain.com (when I transfer everthing, this is my 'main account').

My current DNS settings are:

A    @    192.210.160.76    1/2 Hour    Edit
CNAME    e    email.lifeassetsllc.com    1 Hour    Edit
CNAME    email    email.lifeassetsllc.com    1 Hour    Edit
CNAME    ftp    @    1 Hour    Edit
CNAME    mobilemail    mobilemail-v01.prod.mesa1.secureserver.net    1 Hour    Edit
CNAME    pda    mobilemail-v01.prod.mesa1.secureserver.net    1 Hour    Edit
CNAME    webmail    mail.lifeassetsllc.com    1 Hour    Edit
CNAME    www    @    1 Hour    Edit
CNAME    _domainconnect    _domainconnect.gd.domaincontrol.com    1 Hour    Edit
MX    @    @ (Priority: 10)    1 Hour    Edit
MX    mail    @ (Priority: 10)    1 Hour    Edit
TXT    @    v=spf1 mx mx:lifeassetsllc.com -all    1 Hour    Edit
NS    @    ns47.domaincontrol.com    1 Hour   
NS    @    ns48.domaincontrol.com    1 Hour

What the heck am I missing?

Andrew