fctwente.nl

Checked 21 October 2026, 21:15 UTC · via 8.8.8.8
!Passed with warnings
26 passed 4 warnings 0 failed 3 info

SPF

warn

SPF record published

Found

Record
v=spf1 ip4:80.247.203.0/24 ip4:87.233.70.0/24 ip4:87.233.139.0/24 ip4:87.233.180.0/24 ip4:87.233.188.0/24 ip4:87.233.208.0/24 ip4:87.233.213.0/24 ip4:87.233.218.0/24 ip4:213.193.246.0/24 ip4:178.22.56.0/21 ip4:185.31.244.0/22 ip4:213.136.0.78/27 ip4:213.154.247.0/24 ip4:176.61.130.0/24 ip6:2001:9a8:0:d::/64 ip6:2a00:1e28:3::/48 ip6:2001:7b8:621::/48 ip6:2a00:e480:1::/48 ip4:52.100.0.0/14 ip4:46.19.217.20 ip4:198.2.128.0/24 ip4:198.2.132.0/22 ip4:198.2.136.0/23 ip4:198.2.145.0/24 ip4:205.201.131.128/25 ip4:205.201.134.128/25 ip4:205.201.136.0/23 ip4:205.201.139.0/24 ip4:198.2.177.0/24 ip4:198.2.178.0/23 ip4:198.2.180.0/24 ip4:212.178.79.149 ip4:83.96.195.55 ip4:77.94.248.0/23 ip4:46.31.48.0/21 ip4:89.146.30.9 ip4:89.146.58.102 ip4:185.64.33.133 ip4:213.144.242.9 ip6:2001:828:100:82:5::1 ip4:212.178.79.146 ip4:198.2.186.0/23 ip4:185.64.35.133 ip4:213.144.242.0/28 ip4:89.146.30.0/27 ip4:46.44.162.254 ip4:89.146.1.51 ip4:89.146.1.52 ip4:89.146.1.63 ip4:46.44.142.238 ip4:89.146.1.57 ip4:89.146.63.164 ip4:213.144.232.64 ip4:89.146.22.206 ip6:2a02:22a0:0:1:2::2a ip6:2a02:22a0:0:1:2::2e ip6:2a02:22a0:0:2:2::12 ip6:2a02:22a0:0:1:2::2 ip6:2a02:22a0:0:1:2::5 ip6:2a02:22a0:0:2:2::5 ip4:149.210.228.133 ip4:149.210.235.206 ip4:149.210.235.209 ip4:149.210.228.134 ip4:149.210.228.140 ip4:149.210.175.60 ip4:149.210.159.12 ip4:136.144.227.184 ip6:2a01:7c8:aaba:ca::1 ip6:2a01:7c8:aab9:14e::1 ip6:2a01:7c8:aab9:154::1 ip6:2a01:7c8:aaba:da::1 ip6:2a01:7c8:aaba:db::1 ip6:2a01:7c8:aab5:53f::1 ip6:2a01:7c8:aab4:121::1 ip6:2a01:7c8:d004:453::1 ip4:136.144.208.42 ip4:136.144.208.237 ip4:136.144.212.52 ip4:37.97.135.142 ip4:136.144.244.57 ip4:136.144.244.58 ip4:79.170.91.132 ip4:93.191.131.172 ip6:2a01:7c8:d001:173::1 ip6:2a01:7c8:d001:30c::1 ip6:2a01:7c8:d002:459::1 ip6:2a01:7c8:aabc:105::1 ip6:2a01:7c8:d006:2d::1 ip6:2a01:7c8:d006:2e::1 ip6:2a02:348:36:5b84::1 ip6:2a02:348:9a:83ac::1 ip4:136.144.244.59 ip4:136.144.227.158 ip4:149.210.202.73 ip4:149.210.202.106 ip4:149.210.197.6 ip4:149.210.228.142 ip4:136.144.251.147 ip4:149.210.184.85 ip6:2a01:7c8:d006:2f::1 ip6:2a01:7c8:d004:452::1 ip6:2a01:7c8:aab8:228::1 ip6:2a01:7c8:aab8:228::2 ip6:2a01:7c8:aac9:173::1 ip6:2a01:7c8:aaba:e0::1 ip6:2a01:7c8:d007:32::1 ip6:2a01:7c8:aaae:84::1 ip4:108.166.43.0/24 ip4:146.20.86.8 ip4:146.20.161.0/25 ip4:161.47.34.7 ip4:173.203.187.0/25 ip4:184.106.54.0/25 ip4:204.232.172.40 ip4:20.82.87.96/28 ip4:91.212.215.230 ip4:46.17.90.173 ip4:62.165.72.52 ip4:142.132.180.125 include:amazonses.com include:spf.afas.online include:spf.protection.outlook.com -all
DNS lookups
3 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 3 of 10 DNS lookups #2
    SPF record needs 3 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.
  • !
    Broad IP ranges
    These ranges authorize tens of thousands of addresses or more: ip4:52.100.0.0/14. Check that you really own and send from all of them.
    #27

DMARC

pass

p=reject (_dmarc.fctwente.nl)

Found

Record
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email;
Found at
_dmarc.fctwente.nl
External report address
mailto:dmarc_agg@vali.email (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
ruamailto:dmarc_agg@vali.emailAggregate 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:dmarc_agg@vali.email
  • ✓ 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: selector1, selector2, s1, s2

Found

Selectors
selector1, selector2, s1, s2
_domainkey
NOERROR
SelectorKeyFlags
selector1RSA 2048 bits
selector2RSA 2048 bits
s1RSA 2048 bits
s2RSA 1024 bits

Checks

  • ✓ Keys found: selector1, selector2, s1, s2 #7
    DKIM keys found for this domain with selectors: selector1, selector2, s1, s2
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: 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

pass

Signed, DS published at parent

Found

DNSKEY records
Yes (2)
DS at parent
Yes
Algorithms
RSASHA256 (8)
Key tags
5728, 27064
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
10fctwente-nl.mail.protection.outlook.comA 52.101.185.24 A 52.101.185.114 A 52.101.181.156 A 52.101.68.21 AAAA 2a01:111:f403:ca21::e AAAA 2a01:111:f403:ca3c::8 AAAA 2a01:111:f403:ca48::a AAAA 2a01:111:f403:ca04::fmail-zrxpr07cu00100.inbound.protection.outlook.com ✓ mail-zrxpr04cu00102.inbound.protection.outlook.com ✓ mail-wa4pr05cu00104.inbound.protection.outlook.com ✓ mail-db4pr02cu00205.inbound.protection.outlook.com ✓ mail-matpr04cu00306.inbound.protection.outlook.com ✓ mail-zrxpr05cu00100.inbound.protection.outlook.com ✓ mail-miypr02cu00202.inbound.protection.outlook.com ✓ mail-db7pr03cu00507.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

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

Found

DANE (TLSA records)

MX hostTLSADNSSEC
fctwente-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