diabetesfonds.nl

Checked 21 October 2026, 21:15 UTC · via 8.8.8.8
✗Problems found
30 passed 3 warnings 1 failed 1 info

SPF

fail

SPF record published

Found

Record
v=spf1 include:_spf.mlsend.com mx a ip4:81.30.37.37 ip4:82.201.127.7 include:spf.protection.outlook.com include:spf.afas.online include:_spf.salesforce.com ip4:185.136.64.128/25 ip4:185.136.65.128/25 ip4:185.136.66.128/25 ip4:194.165.34.0/24 include:_spf.exonet.nl include:mail.novti.io include:_spf.formulierenserver.nl a:mailoutgoing.swis.nl ~all
DNS lookups
11 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✗
    11 DNS lookups, over the limit of 10
    SPF record needs 11 DNS lookups (including nested includes), more than the limit of 10. Receivers will return a permerror; reduce includes or flatten the record.
    #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

pass

p=reject (_dmarc.diabetesfonds.nl)

Found

Record
v=DMARC1; p=reject; pct=100; rua=mailto:fa6778c7@in.mailhardener.com
Found at
_dmarc.diabetesfonds.nl
External report address
mailto:fa6778c7@in.mailhardener.com (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
pct100Percentage of mail the policy applies to
ruamailto:fa6778c7@in.mailhardener.comAggregate 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:fa6778c7@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, mx

Found

Selectors
mail, selector1, mx
_domainkey
NOERROR
SelectorKeyFlags
mailRSA 1024 bits
selector1RSA 2048 bits
mxRSA 1024 bits

Checks

  • ✓ Keys found: mail, selector1, mx #7
    DKIM keys found for this domain with selectors: mail, selector1, mx
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), mx (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 (2)
DS at parent
Yes
Algorithms
RSASHA256 (8)
Key tags
64951, 34983
Signatures valid until
29 October 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 2026-10-29 #21
    DNSKEY signatures are valid until 2026-10-29T00:00:00Z.

MX

warn

1 mail server

Found

PriorityHostRecordsReverse DNS
5Diabetesfonds-nl.l-v1.mx.microsoftA 52.101.68.39 A 52.101.185.21 A 52.101.68.15 A 52.101.185.114 AAAA 2a01:111:f403:ca3c::6 AAAA 2a01:111:f403:ca21::8 AAAA 2a01:111:f403:ca21::c AAAA 2a01:111:f403:ca48::8mail-db7pr03cu00607.inbound.protection.outlook.com ✓ mail-zrxpr05cu00105.inbound.protection.outlook.com ✓ mail-db6pr03cu00107.inbound.protection.outlook.com ✓ mail-zrxpr04cu00102.inbound.protection.outlook.com ✓ mail-zrxpr04cu00106.inbound.protection.outlook.com ✓ mail-matpr04cu00100.inbound.protection.outlook.com ✓ mail-matpr04cu00204.inbound.protection.outlook.com ✓ mail-miypr02cu00100.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

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

Found

MTA-STS record
v=STSv1; id=20190601000000Z
Policy URL
https://mta-sts.diabetesfonds.nl/.well-known/mta-sts.txt
Mode
testing
Allowed MX
diabetesfonds-nl.l-v1.mx.microsoft
Max age
1209600 seconds
TLS-RPT record
v=TLSRPTv1; rua=mailto:fa6778c7@in.mailhardener.com

DANE (TLSA records)

MX hostTLSADNSSEC
Diabetesfonds-nl.l-v1.mx.microsoft3 1 1 cfd68bde4129c00a… 3 1 1 54883cc5f1849331… 3 1 1 803f7447cc75b208… 2 0 1 ea7a25255d111fc3… 2 0 1 c1ad7778796d20bc…Yes

Checks

  • ✓ Record published #32
    MTA-STS record found with id 20190601000000Z.
  • !
    Policy in testing mode
    With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.
    #33
  • ✓ 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:fa6778c7@in.mailhardener.com
  • ✓ DANE on all MX hosts #36
    All 1 MX host publish DNSSEC-validated TLSA records.

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