aral.de

Checked 21 October 2026, 21:30 UTC · via 8.8.8.8
!Passed with warnings
30 passed 2 warnings 0 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:_u.aral.de._spf.smart.ondmarc.com ~all
DNS lookups
5 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 5 of 10 DNS lookups #2
    SPF record needs 5 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.aral.de)

Found

Record
v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:a0605431@inbox.ondmarc.com; ruf=mailto:a0605431@inbox.ondmarc.com; adkim=r; aspf=r; fo=0; rf=afrf; ri=3600
Found at
_dmarc.aral.de
External report address
mailto:a0605431@inbox.ondmarc.com (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
sprejectSubdomain policy
pct100Percentage of mail the policy applies to
ruamailto:a0605431@inbox.ondmarc.comAggregate report addresses
rufmailto:a0605431@inbox.ondmarc.comFailure report addresses
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF alignment (r = relaxed, s = strict)
fo0Failure reporting options
rfafrfFailure report format
ri3600Report 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:a0605431@inbox.ondmarc.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

pass

Selectors: selector1

Found

Selectors
selector1
_domainkey
NXDOMAIN
SelectorKeyFlags
selector1RSA 2048 bits

Checks

  • ✓ Keys found: selector1 #7
    DKIM keys found for this domain with selectors: selector1
  • ✓ Strong keys #23
    DKIM keys are strong enough: selector1: 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

warn

2 mail servers

Found

PriorityHostRecordsReverse DNS
10aral-de.mail.protection.outlook.comA 52.101.103.137 A 52.101.68.39 A 52.101.91.159 A 52.101.209.31mail-miypr02cu00101.inbound.protection.outlook.com ✓ mail-db7pr03cu00607.inbound.protection.outlook.com ✓ mail-matpr04cu00207.inbound.protection.outlook.com ✓ mail-cpjpr05cu00207.inbound.protection.outlook.com ✓
50aral-de.mail.protection.outlook.comA 52.101.73.153 A 52.101.68.25 A 52.101.209.28 A 52.101.103.137mail-as8pr05cu00401.inbound.protection.outlook.com ✓ mail-db8pr02cu00101.inbound.protection.outlook.com ✓ mail-cpjpr05cu00104.inbound.protection.outlook.com ✓ mail-miypr02cu00101.inbound.protection.outlook.com ✓

Checks

  • ✓ 2 MX records #9
    Found 2 MX records for this domain.
  • ✓ All hosts resolve #10
    All MX records resolve to valid IP addresses.
  • !
    Hosts without IPv6
    The following MX hosts could not be resolved to IPv6 addresses: aral-de.mail.protection.outlook.com, aral-de.mail.protection.outlook.com
    #11
  • ✓ Redundant MX hosts #12
    Found 2 MX records, which provides redundancy for email delivery.
  • ✓ At most 5 MX records #13
    Found 2 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

info

MTA-STS enforce · TLS-RPT · DANE on 0 of 1 MX hosts

Found

MTA-STS record
v=STSv1; id=1780908256324
Policy URL
https://mta-sts.aral.de/.well-known/mta-sts.txt
Mode
enforce
Allowed MX
aral-de.mail.protection.outlook.com, aral-de.mail.protection.outlook.com
Max age
1209600 seconds
TLS-RPT record
v=TLSRPTv1; rua=mailto:a0605431@inbox.ondmarc.com;

DANE (TLSA records)

MX hostTLSADNSSEC
aral-de.mail.protection.outlook.comnone-

Checks

  • ✓ Record published #32
    MTA-STS record found with id 1780908256324.
  • ✓ Policy enforced #33
    The MTA-STS policy is enforced and cached for 336h0m0s.
  • ✓ All MX hosts covered #34
    Every MX host matches an mx: line of the MTA-STS policy.
  • ✓ Reports enabled #35
    TLS reports are sent to: mailto:a0605431@inbox.ondmarc.com
  • 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