Mail domain report: omio.com

SPF

pass

SPF record published

Found

Record: v=spf1 include:_spf.google.com include:spf.mandrillapp.com include:mail.zendesk.com include:mailgun.org include:sendgrid.net ip4:172.253.122.26 ip4:172.253.116.27 ip4:192.178.223.26 ip4:172.253.116.26 ip6:2607:f8b0:4004:c1d::1a ip6:2a00:1450:400b:c02::1b ip6:2a00:1450:4009:c0f::1a ip4:198.244.232.92 ip4:31.121.80.90 ip4:217.196.249.146 ip4:217.196.249.151 ip4:79.173.134.5 ip4:109.123.121.243 ip4:93.89.95.93 ip4:193.192.51.101 ip4:208.109.80.0/24 ip4:193.192.51.102 ip4:208.109.80.198 ip4:193.192.51.85 ip4:54.37.244.145 ip4:1.68.139.58 ip4:198.244.61.9 ip4:198.244.59.95 ~all
DNS lookups: 10 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 10 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.omio.com)

Found

Record: v=DMARC1;p=quarantine;rua=mailto:dmarc-reports-11024124@omio.com;ruf=mailto:dmarc-reports-11024124@omio.com;fo=1;adkim=s;aspf=s
Found at: _dmarc.omio.com

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
rua	mailto:dmarc-reports-11024124@omio.com	Aggregate report addresses
ruf	mailto:dmarc-reports-11024124@omio.com	Failure report addresses
adkim	s	DKIM alignment (r = relaxed, s = strict)
aspf	s	SPF alignment (r = relaxed, s = strict)
fo	1	Failure reporting options

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:dmarc-reports-11024124@omio.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

warn

Selectors: s1, s2

Found

Selectors: s1, s2
_domainkey: NOERROR

Selector	Key	Flags
s1	RSA 2048 bits
s2	RSA 1024 bits

Checks

✓ Keys found: s1, s2 #7

DKIM keys found for this domain with selectors: 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 172.253.152.27 AAAA 2a00:1450:4010:c22::1a	yulpptr-in-f27.1e100.net ✓ yulpptr-in-f26.1e100.net ✓
10	aspmx2.googlemail.com	A 142.250.147.27 AAAA 2a00:1450:4025:c01::1a	rd-in-f27.1e100.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

pass

https://vmc.digicert.eu/a880a442-1e81-4d75-9cb7-47e3f05127d8.svg

Found

Record: v=BIMI1; l=https://vmc.digicert.eu/a880a442-1e81-4d75-9cb7-47e3f05127d8.svg; a=https://vmc.digicert.eu/a880a442-1e81-4d75-9cb7-47e3f05127d8.pem
Found at: default._bimi.omio.com
Logo: https://vmc.digicert.eu/a880a442-1e81-4d75-9cb7-47e3f05127d8.svg
Certificate: https://vmc.digicert.eu/a880a442-1e81-4d75-9cb7-47e3f05127d8.pem

Checks

✓ Logo and certificate published #38

BIMI logo: https://vmc.digicert.eu/a880a442-1e81-4d75-9cb7-47e3f05127d8.svg; certificate: https://vmc.digicert.eu/a880a442-1e81-4d75-9cb7-47e3f05127d8.pem
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.