liberapay.com

Checked 22 October 2026, 09:35 UTC · via 8.8.8.8
✗Problems found
27 passed 2 warnings 1 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 ip4:5.135.153.125 ip6:2001:41d0:8:d37d::/64 mx -all
DNS lookups
1 of 10
Void lookups
0 of 2

Checks

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

Found

Record
v=DMARC1; p=reject; pct=100; rua=mailto:6ed35a07c1104ee3baf781fbf2df3963@dmarc-reports.cloudflare.net,mailto:postmaster.reports@liberapay.com
Found at
_dmarc.liberapay.com
External report address
mailto:6ed35a07c1104ee3baf781fbf2df3963@dmarc-reports.cloudflare.net (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
pct100Percentage of mail the policy applies to
ruamailto:6ed35a07c1104ee3baf781fbf2df3963@dmarc-reports.cloudflare.net,mailto:postmaster.reports@liberapay.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:6ed35a07c1104ee3baf781fbf2df3963@dmarc-reports.cloudflare.net, mailto:postmaster.reports@liberapay.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

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 (2)
DS at parent
Yes
Algorithms
ECDSAP256SHA256 (13)
Key tags
2371, 34505
Signatures valid until
13 December 2026, 00:57 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 2026-12-13 #21
    DNSKEY signatures are valid until 2026-12-13T00:57:23Z.

MX

warn

1 mail server

Found

PriorityHostRecordsReverse DNS
10mail.changaco.netA 5.135.153.125 AAAA 2001:41d0:8:d37d::1changaco.net ✓ changaco.net ✓

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 2 MX addresss have a PTR record that resolves back to them.

TLS

fail

MTA-STS record without policy · TLS-RPT · DANE on 0 of 1 MX hosts

Found

MTA-STS record
v=STSv1; id=12007279439699119183
Policy URL
https://mta-sts.liberapay.com/.well-known/mta-sts.txt
Policy error
Get "https://mta-sts.liberapay.com/.well-known/mta-sts.txt": tls: failed to verify certificate: x509: certificate is valid for changaco.net, mail.changaco.net, www.changaco.net, not mta-sts.liberapay.com
TLS-RPT record
v=TLSRPTv1; rua=mailto:postmaster.reports@liberapay.com

DANE (TLSA records)

MX hostTLSADNSSEC
mail.changaco.netnone-

Checks

  • ✓ Record published #32
    MTA-STS record found with id 12007279439699119183.
  • ✗
    Policy not reachable
    The MTA-STS record exists but the policy could not be fetched, so senders ignore MTA-STS: Get "https://mta-sts.liberapay.com/.well-known/mta-sts.txt": tls: failed to verify certificate: x509: certificate is valid for changaco.net, mail.changaco.net, www.changaco.net, not mta-sts.liberapay.com.
    #33
  • ✓ Reports enabled #35
    TLS reports are sent to: mailto:postmaster.reports@liberapay.com
  • 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