proserve.nl

Checked 22 October 2026, 15:30 UTC · via 8.8.8.8
✗Problems found
23 passed 5 warnings 2 failed 1 info

SPF

fail

SPF record published

Found

Record
v=spf1 a mx include:_spf.proserve.nl include:_spf2.proserve.nl include:_spf.afasonline.nl include:_spf.transip.email include:_spf.transip.nl include:_spf.premiumantispam.nl include:9458045.spf04.hubspotemail.net ~all
DNS lookups
12 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✗
    12 DNS lookups, over the limit of 10
    SPF record needs 12 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

fail

p=none (_dmarc.proserve.nl)

Found

Record
v=DMARC1; p=none; sp=none; pct=100; adkim=r; aspf=r; ri=604800;rua=mailto:mailauth-reports@transip.us, ruf=mailto:mailauth-reports+ruf@transip.us
Found at
_dmarc.proserve.nl
External report address
mailto:mailauth-reports@transip.us (authorized)
External report address
ruf=mailto:mailauth-reports+ruf@transip.us (only mailto: report addresses are supported by receivers)
TagValueMeaning
vDMARC1Version
pnonePolicy
spnoneSubdomain policy
pct100Percentage of mail the policy applies to
ruamailto:mailauth-reports@transip.us, ruf=mailto:mailauth-reports+ruf@transip.usAggregate report addresses
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF alignment (r = relaxed, s = strict)
ri604800Report interval (seconds)

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:mailauth-reports@transip.us, ruf=mailto:mailauth-reports+ruf@transip.us
  • !
    Unsupported report address
    Receivers only send reports to mailto: addresses: ruf=mailto:mailauth-reports+ruf@transip.us.
    #29

DKIM

pass

Selectors: selector1, selector2

Found

Selectors
selector1, selector2
_domainkey
NOERROR
SelectorKeyFlags
selector1RSA 2048 bits
selector2RSA 2048 bits

Checks

  • ✓ Keys found: selector1, selector2 #7
    DKIM keys found for this domain with selectors: selector1, selector2
  • ✓ Strong keys #23
    DKIM keys are strong enough: selector1: RSA 2048 bits; selector2: RSA 2048 bits.
  • ✓ 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 (1)
DS at parent
Yes
Algorithms
RSASHA256 (8)
Key tags
64954
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

1 mail server

Found

PriorityHostRecordsReverse DNS
10mx.spamfilter.ioA 46.36.212.34 A 46.36.212.38 A 89.188.78.64 A 94.231.106.12 A 46.36.212.37 A 46.36.212.36 A 89.188.78.65 A 89.188.78.66node4.spamfilter.io ✓ node7.spamfilter.io ✓ node3.spamfilter.io ✓ node2.spamfilter.io ✓ node6.spamfilter.io ✓ node8.spamfilter.io ✓ node9.spamfilter.io ✓ node10.spamfilter.io ✓

Checks

  • ✓ 1 MX record #9
    Found 1 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: mx.spamfilter.io
    #11
  • !
    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 1 of 1 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
mx.spamfilter.io3 1 1 9a25f05f2e322dab…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 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