Mail domain report: truenas.com

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:192.41.228.0/24 include:_spf.google.com include:_spf.salesforce.com include:6502416.spf10.hubspotemail.net include:_spf.cmail.ondemand.com include:amazonses.com ip4:173.239.64.128/25 ip4:208.87.221.192/26 ip4:34.211.90.103 ip4:52.9.207.12/32 ip4:50.16.2.105/32 ip4:52.0.172.150/32 ip4:167.89.104.131/32 ip4:167.89.104.137/32 ip4:167.89.104.142/32 ip4:167.89.104.147/32 ip4:167.89.104.156/32 ip4:167.89.104.49 ip4:167.89.104.54 ip4:167.89.104.134 ip4:50.112.185.54 ip4:35.233.168.62 ip4:35.185.253.62 ip4:35.188.232.138 ip4:35.236.210.191 ip4:35.194.77.56 ip4:34.86.76.227 ip4:34.86.231.208 ip4:35.245.149.42 ip4:34.105.107.15 ip4:35.230.60.156 ip4:35.197.126.78 ip4:35.199.174.181 ~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.truenas.com)

Found

Record: v=DMARC1; p=quarantine; rua=mailto:abuse@truenas.com
Found at: _dmarc.truenas.com

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
rua	mailto:abuse@truenas.com	Aggregate report addresses

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:abuse@truenas.com
✓ 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

pass

Selectors: google

Found

Selectors: google
_domainkey: NOERROR

Selector	Key	Flags
google	RSA 2048 bits

Checks

✓ Keys found: google #7

DKIM keys found for this domain with selectors: google
✓ Strong keys #23

DKIM keys are strong enough: google: 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

pass

5 mail servers

Found

Priority	Host	Records	Reverse DNS
1	ASPMX.L.GOOGLE.com	A 142.251.127.26 AAAA 2a00:1450:4001:c21::1a	lcfrai-in-f26.1e100.net ✓ lcfrai-in-f26.1e100.net ✓
2	ALT2.ASPMX.L.GOOGLE.com	A 172.253.152.27 AAAA 2a00:1450:4010:c22::1a	yulpptr-in-f27.1e100.net ✓ yulpptr-in-f26.1e100.net ✓
5	ALT1.ASPMX.L.GOOGLE.com	A 142.250.147.27 AAAA 2a00:1450:4025:c01::1b	rd-in-f27.1e100.net ✓ rd-in-f27.1e100.net ✓
10	ALT3.ASPMX.L.GOOGLE.com	A 192.179.20.26 AAAA 2404:6800:4000:1027::1a	ncboms-in-f26.1e100.net ✓ ncboms-in-f26.1e100.net ✓
10	ALT4.ASPMX.L.GOOGLE.com	A 192.178.158.27 AAAA 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net ✓ lcdels-in-f26.1e100.net ✓

Checks

✓ 5 MX records #9

Found 5 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.
✓ Redundant MX hosts #12

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

Found 5 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 10 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 5 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
ASPMX.L.GOOGLE.com	none	-
ALT2.ASPMX.L.GOOGLE.com	none	-
ALT1.ASPMX.L.GOOGLE.com	none	-
ALT3.ASPMX.L.GOOGLE.com	none	-
ALT4.ASPMX.L.GOOGLE.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

pass

https://vmc.digicert.com/5443fd8a-32ff-4748-9403-649de7897d73.svg

Found

Record: v=BIMI1; l=https://vmc.digicert.com/5443fd8a-32ff-4748-9403-649de7897d73.svg; a=https://vmc.digicert.com/5443fd8a-32ff-4748-9403-649de7897d73.pem
Found at: default._bimi.truenas.com
Logo: https://vmc.digicert.com/5443fd8a-32ff-4748-9403-649de7897d73.svg
Certificate: https://vmc.digicert.com/5443fd8a-32ff-4748-9403-649de7897d73.pem

Checks

✓ Logo and certificate published #38

BIMI logo: https://vmc.digicert.com/5443fd8a-32ff-4748-9403-649de7897d73.svg; certificate: https://vmc.digicert.com/5443fd8a-32ff-4748-9403-649de7897d73.pem
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.