purewow.com

SPF record published

Found

Record

v=spf1 ip4:50.17.232.7 ip4:50.17.202.3 ip4:54.209.198.190 ip4:54.209.186.148 ip4:54.209.160.127 ip4:34.226.12.212 ip4:52.20.70.39 ip4:18.213.78.23 ip4:34.226.12.212 include:aspmx.sailthru.com include:_spf.google.com include:mail.zendesk.com include:spf-008c8b01.pphosted.com ~all

DNS lookups

4 of 10

Void lookups

1 of 2

Problem

include:spf-008c8b01.pphosted.com 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:spf-008c8b01.pphosted.com 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: s1, s2

Found

Selectors

s1, s2

_domainkey

NXDOMAIN

Checks

• ✓ Keys found: s1, s2 #7

  DKIM keys found for this domain with selectors: 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.

Not signed

Found

DNSKEY records

No (0)

DS at parent

No

Checks

• !

  Not enabled

  DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

  #8

2 mail servers

Found

Checks

• ✓ 2 MX records #9

  Found 2 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: mxa-009e6a01.gslb.pphosted.com, mxb-009e6a01.gslb.pphosted.com

  #11
• ✓ Redundant MX hosts #12

  Found 2 MX records, which provides redundancy for email delivery.
• ✓ At most 5 MX records #13

  Found 2 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.

no MTA-STS · no TLS-RPT · DANE on 0 of 2 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