Google Admin Toolbox
Domain name

error yourdomain.com

There were some critical problems detected with this domain. Mail-flow is probably affected. Please refer to the corresponding help articles to fix these.
error
Every name server must reply with exactly the same CNAME records.
2600:1f18:65b8:7a02:2ae7:d552:801f:996e
<empty response>

107.20.195.169
<empty response>

35.168.57.191
<empty response>

2600:1f18:65b8:7a01:c4b4:e35f:eb4e:71f7
<empty response>

error
Every name server must reply with exactly the same NS records.
2600:1f18:65b8:7a02:2ae7:d552:801f:996e
<empty response>

107.20.195.169
ns3.domainmanager.com
ns4.domainmanager.com

35.168.57.191
ns3.domainmanager.com
ns4.domainmanager.com

2600:1f18:65b8:7a01:c4b4:e35f:eb4e:71f7
<empty response>

error
Every name server must reply with exactly the same MX records.
2600:1f18:65b8:7a02:2ae7:d552:801f:996e
<empty response>

107.20.195.169
0nullmx.domainmanager.com

35.168.57.191
0nullmx.domainmanager.com

2600:1f18:65b8:7a01:c4b4:e35f:eb4e:71f7
<empty response>

warning
DKIM is not set up.
warning
DMARC is not set up.
warning
There should be a valid SPF record.
SPF record specifies Gmail's IP addresses as valid for sending domain's messages
If no other servers send mail on behalf of this domain then this record should be set to
"v=spf1 include:_spf.google.com ~all"
warning
No Google mail exchangers found. Relayhost configuration?
If you intentionally set up a mail server somewhere on your premises that automatically forwards all incoming mail to Google you may disregard this warning. Otherwise - this is a serious configuration error as it causes disruption of mail flow.
0nullmx.domainmanager.com
done
Domain should have at least 2 NS servers.
done
Naked domain must be an A record (not CNAME).
done
Every name server must reply with exactly the same TXT DKIM records.
done
Every name server must reply with exactly the same TXT DMARC records.
done
Every name server must reply with exactly the same TXT records.
done
MX lookup must fit in one UDP response packet.
done
TXT lookup should fit in one UDP response packet.

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