sonesta.com

SPF record published

Found

Record

v=spf1 include:_u.sonesta.com._spf.smart.ondmarc.com -all

DNS lookups

1 of 10

Void lookups

0 of 2

Problem

include:_u.sonesta.com._spf.smart.ondmarc.com could not be resolved: DNS query for _u.sonesta.com._spf.smart.ondmarc.com failed: read udp 46.225.38.91:48181->8.8.8.8:53: i/o timeout

Checks

• ✓ No deprecated ptr mechanism #1

  No ptr mechanism found in SPF record.
• !

  1 of 10 DNS lookups, with problems

  SPF record needs 1 DNS lookups (limit is 10). Problems found: include:_u.sonesta.com._spf.smart.ondmarc.com could not be resolved: DNS query for _u.sonesta.com._spf.smart.ondmarc.com failed: read udp 46.225.38.91:48181->8.8.8.8:53: i/o timeout.

  #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.

Selectors: k1, selector1, s1, s2

Found

Selectors

k1, selector1, s1, s2

_domainkey

NOERROR

Checks

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

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

  1024-bit DKIM key

  1024-bit RSA keys are the minimum and are considered weak today: 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.

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-00226201.gslb.pphosted.com, mxb-00226201.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.

MTA-STS enforce · TLS-RPT · DANE on 0 of 2 MX hosts (lookup failed for 1)

Found

MTA-STS record

v=STSv1; id=1666181639562

Policy URL

https://mta-sts.sonesta.com/.well-known/mta-sts.txt

Mode

enforce

Allowed MX

mxb-00226201.gslb.pphosted.com, mxa-00226201.gslb.pphosted.com

Max age

86400 seconds

TLS-RPT record

v=TLSRPTv1; rua=mailto:c5c3aeb0@inbox.ondmarc.com;

DANE (TLSA records)

Checks

• ✓ Record published #32

  MTA-STS record found with id 1666181639562.
• ✓ Policy enforced #33

  The MTA-STS policy is enforced and cached for 24h0m0s.
• ✓ All MX hosts covered #34

  Every MX host matches an mx: line of the MTA-STS policy.
• ✓ Reports enabled #35

  TLS reports are sent to: mailto:c5c3aeb0@inbox.ondmarc.com
• !

  Not all MX hosts use DANE

  These MX hosts publish no TLSA records, so mail to them is not protected by DANE: mxb-00226201.gslb.pphosted.com.

  #36