Mail domain report: libbyapp.com

SPF

pass

SPF record published

Found

Record: v=spf1 a mx include:spf.protection.outlook.com include:sendgrid.net include:u16155871.wl122.sendgrid.net ip4:149.72.246.202 -all
DNS lookups: 6 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 6 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.libbyapp.com)

Found

Record: v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:fedd41a6df@rua.easydmarc.us;ruf=mailto:fedd41a6df@ruf.easydmarc.us;ri=86400;aspf=r;adkim=r;fo=0:1:d:s;
Found at: _dmarc.libbyapp.com
External report address: mailto:fedd41a6df@rua.easydmarc.us (authorized)
External report address: mailto:fedd41a6df@ruf.easydmarc.us (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
sp	reject	Subdomain policy
pct	100	Percentage of mail the policy applies to
rua	mailto:fedd41a6df@rua.easydmarc.us	Aggregate report addresses
ruf	mailto:fedd41a6df@ruf.easydmarc.us	Failure report addresses
adkim	r	DKIM alignment (r = relaxed, s = strict)
aspf	r	SPF alignment (r = relaxed, s = strict)
fo	0:1:d:s	Failure reporting options
ri	86400	Report interval (seconds)

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:fedd41a6df@rua.easydmarc.us
✓ 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

fail

No keys found under the checked selectors

Found

Selectors: None found
_domainkey: NXDOMAIN

Checks

✗

No DKIM keys published

_domainkey.libbyapp.com does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.

#7

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	libbyapp-com.mail.protection.outlook.com	A 52.101.60.163 A 52.101.9.11 A 52.101.60.71 A 52.101.194.17 AAAA 2a01:111:f403:c92c::7 AAAA 2a01:111:f403:f904::2 AAAA 2a01:111:f403:c918::5 AAAA 2a01:111:f403:f901::	mail-bn3pr04cu00103.inbound.protection.outlook.com ✓ mail-bl1pr02cu00103.inbound.protection.outlook.com ✓ mail-bn0pr02cu00307.inbound.protection.outlook.com ✓ mail-ch5pr02cu00401.inbound.protection.outlook.com ✓ mail-dm3pr04cu00107.inbound.protection.outlook.com ✓ mail-ds2pr05cu00102.inbound.protection.outlook.com ✓ mail-byapr05cu00805.inbound.protection.outlook.com ✓ mail-bl3pr02cu00100.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
libbyapp-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

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