Mail domain report: liantis.be

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:194.78.38.27/32 ip4:194.78.38.2/32 ip4:185.111.57.5 include:spf.protection.outlook.com include:550275.spf04.hubspotemail.net include:spf.mandrillapp.com include:carerix.net include:mail.zendesk.com include:spf.topdesk.net include:spf.flexmail.eu include:sendgrid.net -all
DNS lookups: 9 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 9 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

pass

p=reject (_dmarc.liantis.be)

Found

Record: v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:fko7acbf4x@rua.powerdmarc.com;ruf=mailto:fko7acbf4x@ruf.powerdmarc.com;adkim=r;aspf=s;fo=1:d:s;
Found at: _dmarc.liantis.be
External report address: mailto:fko7acbf4x@rua.powerdmarc.com (authorized)
External report address: mailto:fko7acbf4x@ruf.powerdmarc.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
sp	reject	Subdomain policy
pct	100	Percentage of mail the policy applies to
rua	mailto:fko7acbf4x@rua.powerdmarc.com	Aggregate report addresses
ruf	mailto:fko7acbf4x@ruf.powerdmarc.com	Failure report addresses
adkim	r	DKIM alignment (r = relaxed, s = strict)
aspf	s	SPF alignment (r = relaxed, s = strict)
fo	1:d:s	Failure reporting options

Checks

✓ Policy: reject #4

DMARC policy is set to 'reject', which provides the strongest protection against email spoofing.
✓ Record published #5

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

DMARC record syntax is valid.
✓ Applies to 100% of mail #18

DMARC policy applies to all failing mail.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:fko7acbf4x@rua.powerdmarc.com
✓ Subdomain policy: reject #20

Subdomains are covered by policy 'reject'.
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

warn

Selectors: selector1, s1, s2

Found

Selectors: selector1, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 1024 bits
s1	RSA 2048 bits
s2	RSA 1024 bits

Checks

✓ Keys found: selector1, s1, s2 #7

DKIM keys found for this domain with selectors: selector1, s1, s2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: selector1 (1024 bits), s2 (1024 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
0	liantis-be.mail.protection.outlook.com	A 52.101.73.155 A 52.101.185.114 A 52.101.73.153 A 52.101.209.31 AAAA 2a01:111:f403:ca48::8 AAAA 2a01:111:f403:ca48::c AAAA 2a01:111:f403:ca04::d AAAA 2a01:111:f403:ca48::a	mail-am7pr02cu00203.inbound.protection.outlook.com ✓ mail-zrxpr04cu00102.inbound.protection.outlook.com ✓ mail-as8pr05cu00401.inbound.protection.outlook.com ✓ mail-cpjpr05cu00207.inbound.protection.outlook.com ✓ mail-miypr02cu00100.inbound.protection.outlook.com ✓ mail-miypr03cu00104.inbound.protection.outlook.com ✓ mail-db6pr03cu00105.inbound.protection.outlook.com ✓ mail-miypr02cu00202.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

fail

MTA-STS record without policy · TLS-RPT · DANE on 0 of 1 MX hosts

Found

MTA-STS record: v=STSv1; id=20230424162700
Policy URL: https://mta-sts.liantis.be/.well-known/mta-sts.txt
Policy error: Get "https://mta-sts.liantis.be/.well-known/mta-sts.txt": dial tcp: lookup mta-sts.liantis.be on 127.0.0.53:53: no such host
TLS-RPT record: v=TLSRPTv1; rua=mailto:fko7acbf4x@tls.powerdmarc.com

DANE (TLSA records)

MX host	TLSA	DNSSEC
liantis-be.mail.protection.outlook.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20230424162700.
✗

Policy not reachable

The MTA-STS record exists but the policy could not be fetched, so senders ignore MTA-STS: Get "https://mta-sts.liantis.be/.well-known/mta-sts.txt": dial tcp: lookup mta-sts.liantis.be on 127.0.0.53:53: no such host.

#33
✓ Reports enabled #35

TLS reports are sent to: mailto:fko7acbf4x@tls.powerdmarc.com
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

warn

https://www.liantis.be/static/images/liantis.svg

Found

Record: v=BIMI1;l=https://www.liantis.be/static/images/liantis.svg
Found at: default._bimi.liantis.be
Logo: https://www.liantis.be/static/images/liantis.svg

Checks

!

No certificate (a=)

The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.

#38
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.