Google Admin Toolbox
Domain name

warning lists.sugarlabs.org

There were some non-critical problems detected with the configuration of this domain. Depending on how you configured your mail-flow, this could be a source of mail delivery issues.
warning
DKIM is not set up.
warning
DMARC is not set up.
warning
SPF must allow Google servers to send mail on behalf of your domain.
Decisiontemporary DNS error in processing
Recordv=spf1 redirect=_spf.lists.sugarlabs.org
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.
<empty response>
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 CNAME records.
done
Every name server must reply with exactly the same NS records.
done
Every name server must reply with exactly the same MX records.
done
Every name server must reply with exactly the same TXT records.

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