Mail domain report: arnage.fr

SPF

pass

SPF record published

Found

Record: v=spf1 a mx include:_spf.o2switch.inovawork.net include:spf.mailinblack.com ip4:80.74.77.110 ip4:80.82.239.53 ip4:62.244.81.196 ip4:151.80.244.193 include:spf.protection.outlook.com include:_spf.eu.mailgun.org -all
DNS lookups: 7 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 7 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.arnage.fr)

Found

Record: v=DMARC1; p=reject; pct=100; fo=1; ri=3600; rua=mailto:fe3b1053@dmarc.mailgun.org,mailto:55498d35@inbox.ondmarc.com; ruf=mailto:fe3b1053@dmarc.mailgun.org,mailto:55498d35@inbox.ondmarc.com
Found at: _dmarc.arnage.fr
External report address: mailto:fe3b1053@dmarc.mailgun.org (authorized)
External report address: mailto:55498d35@inbox.ondmarc.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
pct	100	Percentage of mail the policy applies to
rua	mailto:fe3b1053@dmarc.mailgun.org,mailto:55498d35@inbox.ondmarc.com	Aggregate report addresses
ruf	mailto:fe3b1053@dmarc.mailgun.org,mailto:55498d35@inbox.ondmarc.com	Failure report addresses
fo	1	Failure reporting options
ri	3600	Report interval (seconds)

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:fe3b1053@dmarc.mailgun.org, mailto:55498d35@inbox.ondmarc.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: default, email, selector1

Found

Selectors: default, email, selector1
_domainkey: NOERROR

Selector	Key	Flags
default	RSA 2048 bits
email	RSA 1024 bits
selector1	RSA 2048 bits

Checks

✓ Keys found: default, email, selector1 #7

DKIM keys found for this domain with selectors: default, email, selector1
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: email (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
5	mx-mibc-fr-06.mailinblack.com	A 51.103.85.55	mx-mibc-fr-06.mailinblack.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.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: mx-mibc-fr-06.mailinblack.com

#11
!

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 1 MX address 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
mx-mibc-fr-06.mailinblack.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