DNS Report for cambridge.org

• lex.ns.cloudflare.com

  • IPv4: 173.245.59.196, 172.64.33.196, 108.162.193.196
  • IPv6: 2a06:98c1:50::ac40:21c4, 2606:4700:58::adf5:3bc4, 2803:f800:50::6ca2:c1c4
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• nucum.ns.cloudflare.com

  • IPv4: 108.162.194.145, 162.159.38.145, 172.64.34.145
  • IPv6: 2a06:98c1:50::ac40:2291, 2606:4700:50::a29f:2691, 2803:f800:50::6ca2:c291
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

Nameserver Count - OK

• lex.ns.cloudflare.com

  • Status: Responded
  • IP(s): 104.17.111.190, 104.17.110.190
  • TTL: 300 seconds
  • Recursive Queries: Allows recursive queries
  • TCP Connectivity: Allows TCP connections

• nucum.ns.cloudflare.com

  • Status: Responded
  • IP(s): 104.17.110.190, 104.17.111.190
  • TTL: 300 seconds
  • Recursive Queries: Allows recursive queries
  • TCP Connectivity: Allows TCP connections

lex.ns.cloudflare.com

• Serial: 2347820835
• Refresh: 10000
• Retry: 2400
• Expire: 604800
• Minimum TTL: 1800

nucum.ns.cloudflare.com

• Serial: 2347820835
• Refresh: 10000
• Retry: 2400
• Expire: 604800
• Minimum TTL: 1800

Serial: 2347820835 - OK

REFRESH: 10000 - OK

RETRY: 2400 - OK

EXPIRE: 604800 - OK

MINIMUM TTL: 1800 - Note: Outside recommended range (1-3 hours)

lex.ns.cloudflare.com

• 4 eu-smtp-inbound-1.mimecast.com ( 195.130.217.241 )
• 4 eu-smtp-inbound-2.mimecast.com ( 91.220.42.241 )

nucum.ns.cloudflare.com

• 4 eu-smtp-inbound-1.mimecast.com ( 195.130.217.201 )
• 4 eu-smtp-inbound-2.mimecast.com ( 195.130.217.201 )

MX Record Consistency - Warning: Inconsistencies found

MX Record Count - OK

• 241.42.220.91.in-addr.arpa -> eu-smtp-inbound-2.mimecast.com
• 201.217.130.195.in-addr.arpa -> eu-smtp-inbound-1.mimecast.com
• 201.217.130.195.in-addr.arpa -> eu-smtp-inbound-1.mimecast.com
• 241.217.130.195.in-addr.arpa -> eu-smtp-inbound-2.mimecast.com

PTR Records - OK

• Signed: No
• Validation: Failed
• DNSKEY Records: None
• DS Records in parent zone: None
• DS at Parent: None

DNSSEC - Note: Domain is not signed with DNSSEC

Error: No DNSSEC records found

SPF Record Published: Passed

Multiple SPF Records: Passed

SPF Record 1:

• Record: v=spf1 redirect=390fwuvj._spf._d.mim.ec
• SPF Syntax: Failed
• Deprecated Elements: Passed
• IP Addresses:
• Includes:
• DNS Lookups: 0
• Void Lookups: Passed
• Escaping Chars: Not Present
• All Mechanism: Not Present

Warnings:

• SPF record doesn't contain an 'all' mechanism

Errors:

• SPF record syntax is invalid

• DKIM Records Found: No

Warnings:

• No DKIM records found for common selectors

• Record: v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; fo=1;
• Syntax: Valid
• Policy: none
• RUA (Aggregate Reports): mailto:[email protected], mailto:[email protected]
• RUF (Forensic Reports): mailto:[email protected], mailto:[email protected]
• Failure Options (fo): 1

DMARC External Validation:

• Valid external domains: rep.dmarcanalyzer.com, rep.dmarcanalyzer.com
• All external domains in your DMARC record are giving permission to send them DMARC reports.