Google Admin Toolbox Check MX

Google Admin Toolbox
Domain name

warning b01abando.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
DMARC is not set up.
help_outline
Help center article
warning
MTA-STS DNS Record.
If your domain wants to use MTA-STS (optional), the MTA-STS TXT record must comply with RFC8461.
Domain _mta-sts.b01abando.org. not found.
warning
There should not be a mail exchanger set up on naked domain name.
Presence of mail server on A record of your domain can lead to subtle and hard-to-debug problems with mails 'accidentally' missing in case of DNS problems. You can check this problem yourself by typing
telnet your.doma.in 25
Normally this SHOULD result in 'Connection refused' message.
info_outline
Effective SPF Address Ranges.
The following IP addresses are taken from the includes and IP4/IP6 directives within this domains SPF record.
b01abando.org.
_spf.google.com
_netblocks.google.com
35.190.247.0/24
64.233.160.0/19
66.102.0.0/20
66.249.80.0/20
72.14.192.0/18
74.125.0.0/16
108.177.8.0/21
173.194.0.0/16
209.85.128.0/17
216.58.192.0/19
216.239.32.0/19
_netblocks2.google.com
2001:4860:4000::/36
2404:6800:4000::/36
2607:f8b0:4000::/36
2800:3f0:4000::/36
2a00:1450:4000::/36
2c0f:fb50:4000::/36
_netblocks3.google.com
172.217.0.0/19
172.217.32.0/20
172.217.128.0/19
172.217.160.0/20
172.217.192.0/19
172.253.56.0/21
172.253.112.0/20
108.177.96.0/19
35.191.0.0/16
130.211.0.0/22
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 MTA-STS record.
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.
done
DKIM authentication DNS setup.
done
SPF must allow Google servers to send mail on behalf of your domain.

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