voedingscentrum.nl

Checked 21 October 2026, 21:26 UTC · via 8.8.8.8
!Passed with warnings
30 passed 3 warnings 0 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:_spf.exsilia.net include:_spf.eu.sparkpostmail.com include:spf.avetica.net include:spf.protection.outlook.com include:spf.afas.online a:mta.4cinfra.nl include:_spf.eu.mailgun.org ~all
DNS lookups
8 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 8 of 10 DNS lookups #2
    SPF record needs 8 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.voedingscentrum.nl)

Found

Record
v=DMARC1; p=reject; rua=mailto:42c2b5d5@in.mailhardener.com; ruf=mailto:42c2b5d5@in.mailhardener.com
Found at
_dmarc.voedingscentrum.nl
External report address
mailto:42c2b5d5@in.mailhardener.com (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
ruamailto:42c2b5d5@in.mailhardener.comAggregate report addresses
rufmailto:42c2b5d5@in.mailhardener.comFailure report addresses

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:42c2b5d5@in.mailhardener.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

warn

Selectors: mail, selector1, mta

Found

Selectors
mail, selector1, mta
_domainkey
NOERROR
SelectorKeyFlags
mailRSA 1024 bitstest mode (t=y)
selector1RSA 1024 bits
mtaRSA 1024 bits

Checks

  • ✓ Keys found: mail, selector1, mta #7
    DKIM keys found for this domain with selectors: mail, selector1, mta
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), selector1 (1024 bits), mta (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    Key in test mode
    These keys have t=y, so receivers treat DKIM failures as a test: mail. Remove t=y once DKIM works.
    #24

DNSSEC

pass

Signed, DS published at parent

Found

DNSKEY records
Yes (2)
DS at parent
Yes
Algorithms
ECDSAP256SHA256 (13)
Key tags
2371, 34505
Signatures valid until
4 December 2026, 12:45 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 2026-12-04 #21
    DNSKEY signatures are valid until 2026-12-04T12:45:49Z.

MX

warn

1 mail server

Found

PriorityHostRecordsReverse DNS
10voedingscentrum-nl.mail.protection.outlook.comA 52.101.181.156 A 52.101.91.159 A 52.101.68.27 A 52.101.73.126 AAAA 2a01:111:f403:ca09::26 AAAA 2a01:111:f403:ca04::f AAAA 2a01:111:f403:ca09::28 AAAA 2a01:111:f403:ca21::8mail-wa4pr05cu00104.inbound.protection.outlook.com ✓ mail-matpr04cu00207.inbound.protection.outlook.com ✓ mail-db7pr03cu00503.inbound.protection.outlook.com ✓ mail-am8pr83cu00106.inbound.protection.outlook.com ✓ mail-am8pr83cu00106.inbound.protection.outlook.com ✓ mail-db7pr03cu00507.inbound.protection.outlook.com ✓ mail-am6pr02cu00300.inbound.protection.outlook.com ✓ mail-matpr04cu00100.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

info

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

Found

MTA-STS record
v=STSv1; id=20190601000000Z
Policy URL
https://mta-sts.voedingscentrum.nl/.well-known/mta-sts.txt
Mode
enforce
Allowed MX
voedingscentrum-nl.mail.protection.outlook.com
Max age
1209600 seconds
TLS-RPT record
v=TLSRPTv1; rua=mailto:42c2b5d5@in.mailhardener.com

DANE (TLSA records)

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

Checks

  • ✓ Record published #32
    MTA-STS record found with id 20190601000000Z.
  • ✓ 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:42c2b5d5@in.mailhardener.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