hoyhoy.nl

Checked 22 October 2026, 13:51 UTC · via 8.8.8.8
✗Problems found
16 passed 5 warnings 2 failed 3 info

SPF

fail

SPF record published

Found

Record
v=spf1 mx ip4:37.97.143.188 a:mail99.hoyhoy.nl include:zoho.com include:spf.protection.outlook.com include:mailplus.nl include:_senderspf.copernica.com include:mm1.nl ~all
DNS lookups
12 of 10
Void lookups
0 of 2
Problem
include:mm1.nl could not be resolved: DNS query for mm1.nl returned SERVFAIL

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. Problems found: include:mm1.nl could not be resolved: DNS query for mm1.nl returned SERVFAIL.
    #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

fail

No DMARC record found

Checks

  • ✗
    No DMARC record
    No DMARC record was found for this domain. DMARC is essential for preventing email spoofing. Add a DMARC record with p=reject or at least p=quarantine.
    #5

DKIM

warn

Selectors: dkim

Found

Selectors
dkim
_domainkey
NOERROR
SelectorKeyFlags
dkimRSA 1024 bitsh=sha256

Checks

  • ✓ Keys found: dkim #7
    DKIM keys found for this domain with selectors: dkim
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: dkim (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

pass

Signed, DS published at parent

Found

DNSKEY records
Yes (3)
DS at parent
Yes
Algorithms
RSASHA256 (8)
Key tags
270, 44962, 49278
Signatures valid until
5 November 2026, 00:00 UTC

Checks

  • ✓ Signed, DS published at parent #8
    DNSSEC is enabled for this domain (DNSKEY and DS present), providing additional security for DNS lookups.
  • ✓ Signatures valid until 2026-11-05 #21
    DNSKEY signatures are valid until 2026-11-05T00:00:00Z.

MX

warn

1 mail server

Found

PriorityHostRecordsReverse DNS
0hoyhoy-nl.mail.protection.outlook.com(does not resolve)

Checks

  • ✓ 1 MX record #9
    Found 1 MX records for this domain.
  • !
    Hosts without IP addresses
    The following MX hosts could not be resolved to IP addresses: hoyhoy-nl.mail.protection.outlook.com
    #10
  • !
    Hosts without IPv6
    The following MX hosts could not be resolved to IPv6 addresses: hoyhoy-nl.mail.protection.outlook.com
    #11
  • !
    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.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 1 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
hoyhoy-nl.mail.protection.outlook.comnone-

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