Mail domain report: plutosport.nl

SPF

pass

SPF record published

Found

Record: v=spf1 include:spf.protection.outlook.com include:amazonses.com mx ip4:46.44.158.192/29 ip4:94.130.197.158 ip4:94.130.197.160 ip4:94.130.197.162 ip4:94.130.197.164 ip4:188.34.134.52 ip4:188.34.134.54 ip4:52.101.171.42 ip4:52.101.169.4 ip4:52.101.169.25 ip4:40.107.149.19 ip4:40.107.149.22 ip6:2a01:4f8:c0:2304::2 ip6:2a01:4f8:c0:2303::2 ip6:2a01:4f8:c0:2301::2 ip6:2a01:4f8:c0:2302::2 ip6:2a01:4f8:e0:1cac::2 ip6:2a01:4f8:e0:1cad::2 -all
DNS lookups: 3 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✓ 3 of 10 DNS lookups #2

SPF record needs 3 DNS lookups (limit is 10).
✓ Ends with -all #3

SPF record properly uses -all to restrict unauthorized senders.
✓ Record published #6

SPF record exists for this domain.
✓ Single record #16

Exactly one SPF record is published.
✓ Valid syntax #25

All SPF mechanisms and modifiers are valid.
✓ No void lookups #26

All include/redirect targets exist.
✓ No overly broad IP ranges #27

All ip4/ip6 ranges are narrow enough.

DMARC

fail

p=none (_dmarc.plutosport.nl)

Found

Record: v=DMARC1; p=none; rua=mailto:a9181b9a5edd46f0b6a9df66249ad4da@dmarc-reports.cloudflare.net,mailto:dmarc@smtpeter.com,mailto:682ee627e6059@ag.dmarcly.com; ruf=mailto:682ee627e6059@fo.dmarcly.com; sp=none; fo=0:1:d:s;
Found at: _dmarc.plutosport.nl
External report address: mailto:a9181b9a5edd46f0b6a9df66249ad4da@dmarc-reports.cloudflare.net (authorized)
External report address: mailto:dmarc@smtpeter.com (authorized)
External report address: mailto:682ee627e6059@ag.dmarcly.com (authorized)
External report address: mailto:682ee627e6059@fo.dmarcly.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy
sp	none	Subdomain policy
rua	mailto:a9181b9a5edd46f0b6a9df66249ad4da@dmarc-reports.cloudflare.net,mailto:dmarc@smtpeter.com,mailto:682ee627e6059@ag.dmarcly.com	Aggregate report addresses
ruf	mailto:682ee627e6059@fo.dmarcly.com	Failure report addresses
fo	0:1:d:s	Failure reporting options

Checks

✗

Policy: none (monitoring only)

DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.

#4
✓ Record published #5

DMARC record exists for this domain.
✓ Valid syntax #17

DMARC record syntax is valid.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:a9181b9a5edd46f0b6a9df66249ad4da@dmarc-reports.cloudflare.net, mailto:dmarc@smtpeter.com, mailto:682ee627e6059@ag.dmarcly.com
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

fail

Selectors: dkim, selector1

Found

Selectors: dkim, selector1
_domainkey: NOERROR

Selector	Key	Flags
dkim	RSA 384 bits
selector1	RSA 1024 bits

Checks

✓ Keys found: dkim, selector1 #7

DKIM keys found for this domain with selectors: dkim, selector1
✗

Weak DKIM key

RSA keys shorter than 1024 bits can be cracked and are ignored by receivers (RFC 8301): dkim (384 bits). Rotate to a 2048-bit key.

#23
✓ No problematic flags #24

No keys in test mode, revoked, or limited to SHA-1.

DNSSEC

warn

Not signed

Found

DNSKEY records: No (0)
DS at parent: No

Checks

!

Not enabled

DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

#8

MX

warn

1 mail server

Found

Priority	Host	Records	Reverse DNS
10	plutosport-nl.mail.protection.outlook.com	A 52.101.68.8 A 52.101.103.137 A 52.101.68.29 A 52.101.181.153 AAAA 2a01:111:f403:ca38::a AAAA 2a01:111:f403:ca48::12 AAAA 2a01:111:f403:ca21::10 AAAA 2a01:111:f403:ca3c::8	mail-du0pr03cu00100.inbound.protection.outlook.com ✓ mail-miypr02cu00101.inbound.protection.outlook.com ✓ mail-dbapr03cu00105.inbound.protection.outlook.com ✓ mail-wa4pr04cu00101.inbound.protection.outlook.com ✓ mail-wa4pr05cu00102.inbound.protection.outlook.com ✓ mail-miypr05cu00202.inbound.protection.outlook.com ✓ mail-matpr05cu00100.inbound.protection.outlook.com ✓ mail-zrxpr05cu00100.inbound.protection.outlook.com ✓

Checks

✓ 1 MX record #9

Found 1 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
✓ All hosts have IPv6 #11

All MX records resolve to IPv6 addresses.
!

Single MX host, no backup

Only one MX record found. For better email reliability, consider adding at least one backup MX server.

#12
✓ At most 5 MX records #13

Found 1 MX records, which is within the recommended range (1-5).
✓ No localhost targets #14

No MX records pointing to localhost found.
✓ No private IP addresses #15

No MX records resolving to private IP addresses found.
✓ No CNAME targets #22

No MX records point to a CNAME.
✓ Reverse DNS confirmed #30

All 8 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 1 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
plutosport-nl.mail.protection.outlook.com	none	-

Checks

!

Not configured

MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.

#32
i

Not configured

TLS-RPT lets senders report TLS delivery problems to you. It is most useful together with MTA-STS or DANE.

#35
i

Not used

No MX host publishes TLSA records. DANE lets senders verify your mail server's certificate through DNSSEC; it requires DNSSEC on the MX host's zone.

#36

BIMI

info

No BIMI record

Checks

i

Not configured

BIMI shows your logo next to your mail in supporting mail clients. It requires DMARC enforcement.

#38