litmus.com

p=quarantine (_dmarc.litmus.com)

Found

Record

v=DMARC1; p=quarantine; pct=100; rua=mailto:c25a1b3c@in.mailhardener.com; ruf=mailto:c25a1b3c@in.mailhardener.com; sp=quarantine; aspf=r; fo=1:d:s;

Found at

_dmarc.litmus.com

External report address

mailto:c25a1b3c@in.mailhardener.com (authorized)

Checks

• !

  Policy: quarantine

  DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.

  #4
• ✓ Record published #5

  DMARC record exists for this domain.
• ✓ Valid syntax #17

  DMARC record syntax is valid.
• ✓ Applies to 100% of mail #18

  DMARC policy applies to all failing mail.
• ✓ Aggregate reports enabled #19

  Aggregate reports are sent to: mailto:c25a1b3c@in.mailhardener.com
• ✓ Subdomain policy: quarantine #20

  Subdomains are covered by policy 'quarantine'.
• ✓ External report addresses authorized #29

  Report addresses in other domains have published their authorization.

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: us-smtp-inbound-1.mimecast.com, us-smtp-inbound-2.mimecast.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 12 MX addresss have a PTR record that resolves back to them.

MTA-STS testing · TLS-RPT · DANE on 0 of 2 MX hosts

Found

MTA-STS record

v=STSv1; id=20190601000000Z

Policy URL

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

Mode

testing

Allowed MX

us-smtp-inbound-1.mimecast.com, us-smtp-inbound-2.mimecast.com

Max age

1209600 seconds

TLS-RPT record

v=TLSRPTv1; rua=mailto:c25a1b3c@in.mailhardener.com

DANE (TLSA records)

Checks

• ✓ Record published #32

  MTA-STS record found with id 20190601000000Z.
• !

  Policy in testing mode

  With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.

  #33
• ✓ 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:c25a1b3c@in.mailhardener.com
• 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