Mail domain report: eon.de

SPF

pass

SPF record published

Found

Record: v=spf1 include:spf.protection.outlook.com include:spf.mailjet.com include:spf-sap.eon.com a:surveymonkey.com include:spfa.eon.de include:_spf.salesforce.com ip4:192.109.216.0/24 ip4:160.44.230.240/29 ip4:148.105.8.0/21 ip4:198.2.128.0/18 ip4:205.201.128.0/20 ip4:136.146.128.64/28 ip4:162.247.216.0/22 ip4:178.21.131.158 ip4:178.249.98.17 ip4:182.50.78.64/28 ip4:212.18.21.68/31 ip4:216.74.162.12/30 ip4:46.249.197.144/30 ip4:46.30.5.108/30 ip4:5.61.115.0/25 ip4:50.31.33.37 ip4:193.26.32.0/19 ip4:94.100.245.16/28 -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

warn

p=quarantine (_dmarc.eon.de)

Found

Record: v=DMARC1; p=quarantine; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:bfb9adeaa3e4218@rep.dmarcanalyzer.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:bfb9adeaa3e4218@for.dmarcanalyzer.com; sp=none; fo=1
Found at: _dmarc.eon.de
External report address: mailto:dmarc_rua@emaildefense.proofpoint.com (authorized)
External report address: mailto:bfb9adeaa3e4218@rep.dmarcanalyzer.com (authorized)
External report address: mailto:dmarc_ruf@emaildefense.proofpoint.com (authorized)
External report address: mailto:bfb9adeaa3e4218@for.dmarcanalyzer.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
sp	none	Subdomain policy
rua	mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:bfb9adeaa3e4218@rep.dmarcanalyzer.com	Aggregate report addresses
ruf	mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:bfb9adeaa3e4218@for.dmarcanalyzer.com	Failure report addresses
fo	1	Failure reporting options

Checks

!

Policy: quarantine

DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.

#4
✓ 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:dmarc_rua@emaildefense.proofpoint.com, mailto:bfb9adeaa3e4218@rep.dmarcanalyzer.com
!

Subdomains unprotected (sp=none)

DMARC subdomain policy is sp=none, so spoofed mail from subdomains is not blocked. Consider sp=quarantine or sp=reject.

#20
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

pass

Selectors: selector1, selector2

Found

Selectors: selector1, selector2
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 2048 bits
selector2	RSA 2048 bits

Checks

✓ Keys found: selector1, selector2 #7

DKIM keys found for this domain with selectors: selector1, selector2
✓ Strong keys #23

DKIM keys are strong enough: selector1: RSA 2048 bits; selector2: RSA 2048 bits.
✓ 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	eon-de.mail.protection.outlook.com	A 52.101.170.0 A 52.101.170.1 A 52.101.168.0 A 52.101.170.2	mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-fr4p281cu03101.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-fr6p281cu00202.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.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: eon-de.mail.protection.outlook.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 4 MX addresss have a PTR record that resolves back to them.

TLS

info

MTA-STS enforce · TLS-RPT · DANE on 0 of 1 MX hosts

Found

MTA-STS record: v=STSv1; id=20240220000000Z;
Policy URL: https://mta-sts.eon.de/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: *.mail.protection.outlook.com
Max age: 604800 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:mta-sts.reporting@eon.de

DANE (TLSA records)

MX host	TLSA	DNSSEC
eon-de.mail.protection.outlook.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20240220000000Z.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 168h0m0s.
✓ All MX hosts covered #34

Every MX host matches an mx: line of the MTA-STS policy.
✓ Reports enabled #35

TLS reports are sent to: mailto:mta-sts.reporting@eon.de
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