Mail domain report: law-school.de

SPF

fail

SPF record published

Found

Record: v=spf1 a include:spf.protection.outlook.com include:_spf1.smtp-gateway.de include:spf.createsend.com include:_spf.createsend.com include:spf.salesforce.com include:49411943.spf10.hubspotemail.net ip4:206.191.224.0/19 ip4:212.12.38.110 ip4:40.103.0.0/16 include:_spf.zimpel.de include:servers.mcsv.net ip4:193.174.240.41 ip4:195.37.138.177 -all
DNS lookups: 14 of 10
Void lookups: 1 of 2
Problem: include:spf.createsend.com does not exist or has no records

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✗

14 DNS lookups, over the limit of 10

SPF record needs 14 DNS lookups (including nested includes), more than the limit of 10. Receivers will return a permerror; reduce includes or flatten the record. Problems found: include:spf.createsend.com does not exist or has no records.

#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.
!

1 void lookup

1 include/redirect target does not exist or has no records (limit is 2). This usually is a stale include; remove it.

#26
✓ No overly broad IP ranges #27

All ip4/ip6 ranges are narrow enough.

DMARC

warn

p=quarantine (_dmarc.law-school.de)

Found

Record: v=DMARC1; p=quarantine; rua=mailto:joe.stemick@law-school.de; ruf=mailto:joe.stemick@law-school.de; fo=0:s;
Found at: _dmarc.law-school.de

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
rua	mailto:joe.stemick@law-school.de	Aggregate report addresses
ruf	mailto:joe.stemick@law-school.de	Failure report addresses
fo	0:s	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:joe.stemick@law-school.de
✓ Subdomain policy: quarantine #20

Subdomains are covered by policy 'quarantine'.
✓ Report addresses in own domain #29

All report addresses are in your own organizational domain.

DKIM

warn

Selectors: mail, k1, selector1, selector2

Found

Selectors: mail, k1, selector1, selector2
_domainkey: NOERROR

Selector	Key	Flags
mail	RSA 1024 bits
k1	RSA 1024 bits
selector1	RSA 2048 bits
selector2	RSA 2048 bits

Checks

✓ Keys found: mail, k1, selector1, selector2 #7

DKIM keys found for this domain with selectors: mail, k1, selector1, selector2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), k1 (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	lawschool-de0i.mail.protection.outlook.com	A 52.101.73.145 A 52.101.185.21 A 52.101.68.27 A 52.101.68.21 AAAA 2a01:111:f403:ca48::10 AAAA 2a01:111:f403:ca3c::a AAAA 2a01:111:f403:ca21::8 AAAA 2a01:111:f403:ca09::a	mail-am6pr02cu00301.inbound.protection.outlook.com ✓ mail-zrxpr05cu00105.inbound.protection.outlook.com ✓ mail-db7pr03cu00503.inbound.protection.outlook.com ✓ mail-db4pr02cu00205.inbound.protection.outlook.com ✓ mail-miypr05cu00100.inbound.protection.outlook.com ✓ mail-zrxpr07cu00102.inbound.protection.outlook.com ✓ mail-matpr04cu00100.inbound.protection.outlook.com ✓ mail-am7pr02cu00202.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
lawschool-de0i.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