Mail domain report: study.com

SPF

fail

SPF record published

Found

Record: v=spf1 ip4:54.165.180.232 include:transmail.net include:spf.clearslide.com include:spf.mandrillapp.com include:spf.protection.outlook.com include:zoho.com include:sparkpostmail.com include:_spf.freshmail.pl -all
DNS lookups: 12 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✗

12 DNS lookups, over the limit of 10

SPF record needs 12 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

warn

p=quarantine (_dmarc.study.com)

Found

Record: v=DMARC1; p=quarantine;pct=100; rua=mailto:re+p5muqfprkoc@dmarc.postmarkapp.com,mailto:dmarc_agg@dmarc.250ok.net; ruf=mailto:dmarc_fr@dmarc.250ok.net; sp=reject; aspf=r; rf=afrf; fo=1
Found at: _dmarc.study.com
External report address: mailto:re+p5muqfprkoc@dmarc.postmarkapp.com (authorized)
External report address: mailto:dmarc_agg@dmarc.250ok.net (authorized)
External report address: mailto:dmarc_fr@dmarc.250ok.net (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
sp	reject	Subdomain policy
pct	100	Percentage of mail the policy applies to
rua	mailto:re+p5muqfprkoc@dmarc.postmarkapp.com,mailto:dmarc_agg@dmarc.250ok.net	Aggregate report addresses
ruf	mailto:dmarc_fr@dmarc.250ok.net	Failure report addresses
aspf	r	SPF alignment (r = relaxed, s = strict)
fo	1	Failure reporting options
rf	afrf	Failure report format

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:re+p5muqfprkoc@dmarc.postmarkapp.com, mailto:dmarc_agg@dmarc.250ok.net
✓ 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: default, selector2

Found

Selectors: default, selector2
_domainkey: NXDOMAIN

Selector	Key	Flags
default	RSA 1024 bits
selector2	RSA 1024 bits

Checks

✓ Keys found: default, selector2 #7

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

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: default (1024 bits), 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

1 mail server

Found

Priority	Host	Records	Reverse DNS
0	study-com.mail.protection.outlook.com	A 52.101.41.28 A 52.101.41.206 A 52.101.60.148 A 52.101.10.1 AAAA 2a01:111:f403:c902::1 AAAA 2a01:111:f403:f909::1 AAAA 2a01:111:f403:f805::2 AAAA 2a01:111:f403:c922::7	mail-sj0pr03cu01504.inbound.protection.outlook.com ✓ mail-byapr05cu00806.inbound.protection.outlook.com ✓ mail-bnypr04cu00104.inbound.protection.outlook.com ✓ mail-bn6pr02cu00301.inbound.protection.outlook.com ✓ mail-sj2pr05cu00401.inbound.protection.outlook.com ✓ mail-bn0pr02cu00301.inbound.protection.outlook.com ✓ mail-co2pr03cu00202.inbound.protection.outlook.com ✓ mail-blapr04cu00107.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
study-com.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

pass

https://bimi.entrust.net/study.com/logo.svg

Found

Record: v=BIMI1;l=https://bimi.entrust.net/study.com/logo.svg;a=https://bimi.entrust.net/study.com/certchain.pem
Found at: default._bimi.study.com
Logo: https://bimi.entrust.net/study.com/logo.svg
Certificate: https://bimi.entrust.net/study.com/certchain.pem

Checks

✓ Logo and certificate published #38

BIMI logo: https://bimi.entrust.net/study.com/logo.svg; certificate: https://bimi.entrust.net/study.com/certchain.pem
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.