Mail domain report: typeform.com

SPF

warn

SPF record published

Found

Record: v=spf1 include:mail.zendesk.com include:_spf.google.com include:mailgun.org include:sendgrid.net ip4:136.143.188.0/24 ip4:135.84.80.0/24 ip4:135.84.82.0/24 ip4:117.20.43.11/32 ip4:136.143.184.0/24 ip4:13.108.0.0/14 ip4:66.231.80.0/20 ip4:68.232.192.0/20 ip4:96.43.144.0/20 ip4:128.17.0.0/16 ip4:128.245.0.0/16 ip4:136.146.0.0/15 ip4:198.245.80.0/20 ip4:199.122.120.0/21 ip4:204.14.232.0/21 ip4:34.226.36.48/28 ip4:34.211.108.32/28 ip4:13.58.135.64/28 ip4:13.56.32.176/28 ip4:35.182.14.32/28 ip4:52.60.248.0/22 ip4:52.60.252.0/22 ip4:3.98.2.135/32 ip4:3.98.8.160/32 ip4:3.97.226.192/32 ip4:13.210.4.0/22 ip4:13.210.8.0/22 ip4:13.210.180.120/32 ip4:13.238.98.67/32 ip4:54.252.37.181/32 ip4:3.6.203.25/32 ip4:13.127.212.138/32 ip4:15.206.226.165/32 ip4:15.207.181.18/32 ip4:15.207.182.186/32 ip4:65.0.79.252/32 ip4:3.225.240.254/32 ip4:18.204.28.162/32 ip4:18.214.12.209/32 ip4:34.202.86.120/32 ip4:34.204.111.166/32 ip4:52.44.156.44/32 ip4:44.233.69.21/32 ip4:44.237.79.66/32 ip4:52.36.20.11/32 ip4:35.80.213.208/32 ip4:35.161.141.162/32 ip4:44.234.249.148/32 ip4:85.222.128.0/19 ip4:159.92.128.0/17 ip4:160.8.0.0/16 ip4:161.71.0.0/17 ip4:163.76.128.0/17 ip4:163.79.128.0/17 ip4:185.79.140.0/22 ip4:34.253.190.64/28 ip4:35.158.127.48/28 ip4:35.176.92.16/28 ip4:13.36.84.96/28 ip4:13.50.68.64/28 ip4:13.37.59.29/32 ip4:15.236.110.244/32 ip4:15.236.160.173/32 ip4:101.53.160.0/19 ip4:104.161.128.0/17 ip4:161.32.64.0/18 ip4:161.32.128.0/17 ip4:161.71.128.0/17 ip4:182.50.76.0/22 ip4:202.129.242.0/23 ip4:13.113.196.48/28 ip4:13.228.64.80/28 ip4:13.124.145.0/28 ip4:13.126.23.64/28 ip4:13.210.3.208/28 ip4:13.215.171.240/28 ip4:35.73.89.117/32 ip4:18.181.43.11/32 ip4:54.95.206.252/32 ip4:54.254.118.123/32 ip4:13.251.9.241/32 ip4:13.250.175.171/32 ip4:54.233.205.0/28 ip4:177.71.229.247/32 ip4:18.228.66.156/32 ip4:18.228.207.180/32 ip4:54.89.46.80/32 ip4:18.208.102.98/32 ip4:35.170.128.37/32 ip4:34.252.232.69/32 ip4:52.212.177.196/32 -all
DNS lookups: 9 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 9 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.
!

Broad IP ranges

These ranges authorize tens of thousands of addresses or more: ip4:13.108.0.0/14, ip4:136.146.0.0/15. Check that you really own and send from all of them.

#27

DMARC

pass

p=reject (_dmarc.typeform.com)

Found

Record: v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:reports@dmarc-report.typeform.com,mailto:typeformdmarc-t@dmarc.report-uri.com;
Found at: _dmarc.typeform.com
External report address: mailto:typeformdmarc-t@dmarc.report-uri.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
sp	reject	Subdomain policy
rua	mailto:reports@dmarc-report.typeform.com,mailto:typeformdmarc-t@dmarc.report-uri.com	Aggregate report addresses
fo	1	Failure reporting options

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:reports@dmarc-report.typeform.com, mailto:typeformdmarc-t@dmarc.report-uri.com
✓ 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: google, s1, s2

Found

Selectors: google, s1, s2
_domainkey: NOERROR

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

Checks

✓ Keys found: google, s1, s2 #7

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

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: s2 (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

pass

5 mail servers

Found

Priority	Host	Records	Reverse DNS
1	aspmx.l.google.com	A 142.251.127.27 AAAA 2a00:1450:4001:c21::1a	lcfrai-in-f27.1e100.net ✓ lcfrai-in-f26.1e100.net ✓
5	alt1.aspmx.l.google.com	A 142.250.147.27 AAAA 2a00:1450:4025:c01::1a	rd-in-f27.1e100.net ✓ rd-in-f26.1e100.net ✓
5	alt2.aspmx.l.google.com	A 172.253.152.26 AAAA 2a00:1450:4010:c22::1b	yulpptr-in-f26.1e100.net ✓ yulpptr-in-f27.1e100.net ✓
10	aspmx2.googlemail.com	A 142.250.147.26 AAAA 2a00:1450:4025:c01::1a	rd-in-f26.1e100.net ✓ rd-in-f26.1e100.net ✓
10	aspmx3.googlemail.com	A 172.253.152.27 AAAA 2a00:1450:4010:c22::1a	yulpptr-in-f27.1e100.net ✓ yulpptr-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	-
alt1.aspmx.l.google.com	none	-
alt2.aspmx.l.google.com	none	-
aspmx2.googlemail.com	none	-
aspmx3.googlemail.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