knmt.nl

Checked 22 October 2026, 14:03 UTC · via 8.8.8.8
✗Problems found
22 passed 5 warnings 1 failed 1 info

SPF

pass

SPF record published

Found

Record
v=spf1 ip4:45.13.165.47 ip4:45.13.165.48 ip4:5.39.185.0/24 include:spf.afas.online include:_spf.mx-relay.com include:spf.tmes.trendmicro.eu -all
DNS lookups
4 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 4 of 10 DNS lookups #2
    SPF record needs 4 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

fail

p=none (_dmarc.knmt.nl)

Found

Record
v=DMARC1;p=none;pct=100;rua=mailto:dmarc@smtpeter.com
Found at
_dmarc.knmt.nl
External report address
mailto:dmarc@smtpeter.com (authorized)
TagValueMeaning
vDMARC1Version
pnonePolicy
pct100Percentage of mail the policy applies to
ruamailto:dmarc@smtpeter.comAggregate report addresses

Checks

  • ✗
    Policy: none (monitoring only)
    DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.
    #4
  • ✓ Record published #5
    DMARC record exists for this domain.
  • ✓ Valid syntax #17
    DMARC record syntax is valid.
  • ✓ Aggregate reports enabled #19
    Aggregate reports are sent to: mailto:dmarc@smtpeter.com
  • ✓ External report addresses authorized #29
    Report addresses in other domains have published their authorization.

DKIM

warn

No keys found under the checked selectors

Found

Selectors
None found
_domainkey
NOERROR

Checks

  • !
    No key under common selectors
    The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.
    #7

DNSSEC

pass

Signed, DS published at parent

Found

DNSKEY records
Yes (3)
DS at parent
Yes
Algorithms
RSASHA256 (8)
Key tags
58440, 32026, 32085
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

5 mail servers

Found

PriorityHostRecordsReverse DNS
10filter10.antispamcloud.comA 149.13.75.27 AAAA 2001:978:2:2c::137:100fe1-r3-in.fra02.l.antispamcloud.com ✓ fe2-r3-in.ams14.l.antispamcloud.com ✓
20filter20.antispamcloud.comA 149.13.75.27 AAAA 2001:978:2:7::162:100fe1-r3-in.fra02.l.antispamcloud.com ✓ fe1-r3-in.fra02.l.antispamcloud.com ✓
30filter30.antispamcloud.comA 154.59.104.23 AAAA 2001:978:2:2c::137:100fe2-r3-in.ams14.l.antispamcloud.com ✓ fe2-r3-in.ams14.l.antispamcloud.com ✓
40filter40.antispamcloud.comA 154.59.193.124 AAAA 2001:978:2:6::f:124fe3-r3-in.du01.l.antispamcloud.com ✓ fe3-r3-in.du01.l.antispamcloud.com ✓
50knmt.in.tmes.trendmicro.euA 18.185.115.147 A 18.185.115.145 A 18.185.115.146in.tmes.trendmicro.eu ✓ in.tmes.trendmicro.eu ✓ in.tmes.trendmicro.eu ✓

Checks

  • ✓ 5 MX records #9
    Found 5 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: knmt.in.tmes.trendmicro.eu
    #11
  • ✓ Redundant MX hosts #12
    Found 5 MX records, which provides redundancy for email delivery.
  • ✓ At most 5 MX records #13
    Found 5 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 11 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 4 of 5 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
filter10.antispamcloud.com3 1 1 a10ec56f992e0e0c…Yes
filter20.antispamcloud.com3 1 1 a10ec56f992e0e0c…Yes
filter30.antispamcloud.com3 1 1 a10ec56f992e0e0c…Yes
filter40.antispamcloud.com3 1 1 a10ec56f992e0e0c…Yes
knmt.in.tmes.trendmicro.eunone-

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
  • !
    Not all MX hosts use DANE
    These MX hosts publish no TLSA records, so mail to them is not protected by DANE: knmt.in.tmes.trendmicro.eu.
    #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