Mail domain report: milb.com

SPF

pass

SPF record published

Found

Record: v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
DNS lookups: 1 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 1 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.milb.com)

Found

Record: v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc_agg@vali.email
Found at: _dmarc.milb.com
External report address: mailto:dmarc_agg@vali.email (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
sp	reject	Subdomain policy
rua	mailto:dmarc_agg@vali.email	Aggregate report addresses

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:dmarc_agg@vali.email
✓ 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: selector2, s1, s2

Found

Selectors: selector2, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
selector2	RSA 1024 bits
s1	RSA 2048 bits
s2	RSA 2048 bits

Checks

✓ Keys found: selector2, s1, s2 #7

DKIM keys found for this domain with selectors: selector2, s1, s2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: selector2 (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

2 mail servers

Found

Priority	Host	Records	Reverse DNS
0	milb-com.mail.protection.outlook.com	A 52.101.41.125 A 52.101.10.16 A 52.101.41.183 A 52.101.40.28 AAAA 2a01:111:f403:c903::1 AAAA 2a01:111:f403:f908::3 AAAA 2a01:111:f403:c918:: AAAA 2a01:111:f403:c922::4	mail-byapr05cu00605.inbound.protection.outlook.com ✓ mail-bn6pr21cu00500.inbound.protection.outlook.com ✓ mail-byapr04cu00307.inbound.protection.outlook.com ✓ mail-cy1pr02cu00104.inbound.protection.outlook.com ✓ mail-ea2pr04cu00101.inbound.protection.outlook.com ✓ mail-bn3pr02cu00103.inbound.protection.outlook.com ✓ mail-byapr04cu00400.inbound.protection.outlook.com ✓ mail-bl1pr02cu00104.inbound.protection.outlook.com ✓
10	mail.global.frontbridge.com	(does not resolve)

Checks

✓ 2 MX records #9

Found 2 MX records for this domain.
!

Hosts without IP addresses

The following MX hosts could not be resolved to IP addresses: mail.global.frontbridge.com

#10
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: mail.global.frontbridge.com

#11
✓ Redundant MX hosts #12

Found 2 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 2 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 2 MX hosts (lookup failed for 1)

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
milb-com.mail.protection.outlook.com	none	-
mail.global.frontbridge.com	DNS query for _25._tcp.mail.global.frontbridge.com failed: read udp 46.225.38.91:53006->8.8.8.8:53: i/o timeout	-

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
!

Not all MX hosts use DANE

These MX hosts publish no TLSA records, so mail to them is not protected by DANE: milb-com.mail.protection.outlook.com.

#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