imgburn.com

SPF record published

Found

Record

v=spf1 a mx ptr ip4:51.222.108.129 include:spf-a.hotmail.com include:spf-b.hotmail.com -all

DNS lookups

5 of 10

Void lookups

0 of 2

Checks

• !

  Uses deprecated ptr mechanism

  The ptr mechanism in SPF records is deprecated due to performance issues and should be avoided.

  #1
• ✓ 5 of 10 DNS lookups #2

  SPF record needs 5 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.

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

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

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.
• !

  Hosts without IPv6

  The following MX hosts could not be resolved to IPv6 addresses: 70688aea3a2547a72ab9f34df21f4e.pamx1.hotmail.com

  #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.
• !

  Addresses without reverse DNS

  These MX addresses have no PTR record, which many receivers treat as a spam signal: 52.101.9.91 (70688aea3a2547a72ab9f34df21f4e.pamx1.hotmail.com), 52.101.73.125 (70688aea3a2547a72ab9f34df21f4e.pamx1.hotmail.com), 52.101.73.152 (70688aea3a2547a72ab9f34df21f4e.pamx1.hotmail.com), 52.101.103.139 (70688aea3a2547a72ab9f34df21f4e.pamx1.hotmail.com). Ask your hosting provider to set one.

  #30

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