Mail domain report: lew.de

SPF

fail

SPF record published

Found

Record: v=spf1 include:spf.lew.de include:spf.protection.outlook.com include:spf.mailjet.com include:_spf.qualtrics.com include:saleshand.cloud a:spf1006.agnitas.com include:successfactors.com include:amazonses.com -all
DNS lookups: 15 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✗

15 DNS lookups, over the limit of 10

SPF record needs 15 DNS lookups (including nested includes), more than the limit of 10. Receivers will return a permerror; reduce includes or flatten the record.

#2
✓ 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.lew.de)

Found

Record: v=DMARC1;p=none;rua=mailto:monitoring-development@lew.de
Found at: _dmarc.lew.de

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy
rua	mailto:monitoring-development@lew.de	Aggregate report addresses

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:monitoring-development@lew.de
✓ Report addresses in own domain #29

All report addresses are in your own organizational domain.

DKIM

pass

Selectors: default, mail, selector1

Found

Selectors: default, mail, selector1
_domainkey: NOERROR

Selector	Key	Flags
default	RSA 2048 bits
mail	RSA 2048 bits
selector1	RSA 2048 bits

Checks

✓ Keys found: default, mail, selector1 #7

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

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

DANE (TLSA records)

MX host	TLSA	DNSSEC
lew-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@lew.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