psychologytoday.com

SPF record published

Found

Record

v=spf1 ip4:64.115.237.0/24 include:spf.protection.outlook.com include:mxlogic.net include:servers.mcsv.net include:spf.mandrillapp.com ip4:216.250.171.184/28 ip4:65.83.107.192/26 -all

DNS lookups

4 of 10

Void lookups

1 of 2

Problem

include:mxlogic.net does not exist or has no records

Checks

• ✓ No deprecated ptr mechanism #1

  No ptr mechanism found in SPF record.
• !

  4 of 10 DNS lookups, with problems

  SPF record needs 4 DNS lookups (limit is 10). Problems found: include:mxlogic.net does not exist or has no records.

  #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.
• !

  1 void lookup

  1 include/redirect target does not exist or has no records (limit is 2). This usually is a stale include; remove it.

  #26
• ✓ No overly broad IP ranges #27

  All ip4/ip6 ranges are narrow enough.

Selectors: mail, k1, selector1, selector2, s1, s2

Found

Selectors

mail, k1, selector1, selector2, s1, s2

_domainkey

NOERROR

Checks

• ✓ Keys found: mail, k1, selector1, selector2, s1, s2 #7

  DKIM keys found for this domain with selectors: mail, k1, selector1, selector2, s1, s2
• !

  1024-bit DKIM key

  1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), k1 (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.

Signed, DS published at parent

Found

DNSKEY records

Yes (3)

DS at parent

Yes

Algorithms

ECDSAP256SHA256 (13)

Key tags

44812, 16068, 58606

Signatures valid until

22 October 2026, 18:00 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 expire in 8h0m0s

  DNSKEY signatures expire at 2026-10-22T18:00:00Z (in 8h0m0s). Check that re-signing works.

  #21

1 mail server

Found

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.

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

Found

DANE (TLSA records)

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