ithodaalderop.nl

Checked 22 October 2026, 14:00 UTC · via 8.8.8.8
!Passed with warnings
25 passed 6 warnings 0 failed 1 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:_spf1.ithodaalderop.nl include:spf.protection.outlook.com include:mailservers.expoints.nl include:spf.topdesk.net include:_spf.supportbyrobin.com a:climateforlife.managed-otrs.com a:climateforlife-test.managed-otrs.com -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

pass

p=reject (_dmarc.ithodaalderop.nl)

Found

Record
v=DMARC1; p=reject; fo=1; rua=mailto:1pmvbucl@ag.eu.dmarcadvisor.com; ruf=mailto:1pmvbucl@fr.eu.dmarcadvisor.com
Found at
_dmarc.ithodaalderop.nl
External report address
mailto:1pmvbucl@ag.eu.dmarcadvisor.com (authorized)
External report address
mailto:1pmvbucl@fr.eu.dmarcadvisor.com (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
ruamailto:1pmvbucl@ag.eu.dmarcadvisor.comAggregate report addresses
rufmailto:1pmvbucl@fr.eu.dmarcadvisor.comFailure report addresses
fo1Failure reporting options

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:1pmvbucl@ag.eu.dmarcadvisor.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: dkim, selector1, s1, s2

Found

Selectors
dkim, selector1, s1, s2
_domainkey
NOERROR
SelectorKeyFlags
dkimRSA 1024 bitsh=sha256
selector1RSA 1024 bits
s1RSA 2048 bits
s2RSA 1024 bits

Checks

  • ✓ Keys found: dkim, selector1, s1, s2 #7
    DKIM keys found for this domain with selectors: dkim, selector1, s1, s2
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: dkim (1024 bits), selector1 (1024 bits), 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

warn

2 mail servers

Found

PriorityHostRecordsReverse DNS
10securemail01.csngroep.nlA 185.157.145.230securemail.csngroep.nl ✓
20securemail02.csngroep.nlA 185.157.145.231securemail.csngroep.nl (does not resolve back)

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: securemail01.csngroep.nl, securemail02.csngroep.nl
    #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 does not match
    The PTR name of these addresses does not resolve back to the same address: 185.157.145.231 -> securemail.csngroep.nl.
    #30

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 2 of 2 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
securemail01.csngroep.nl3 0 1 da030e34d38bafaf…Yes
securemail02.csngroep.nl3 0 1 da030e34d38bafaf…Yes

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
  • !
    Not configured
    MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".
    #35
  • ✓ DANE on all MX hosts #36
    All 2 MX hosts 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