yewtu.be

Checked 22 October 2026, 07:30 UTC · via 8.8.8.8
!Passed with warnings
23 passed 7 warnings 0 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:sendgrid.net include:amazonses.com mx mx:mx.yewtu.be include:_spf.scw-tem.cloud ~all
DNS lookups
6 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 6 of 10 DNS lookups #2
    SPF record needs 6 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.

DMARC

pass

p=reject (_dmarc.yewtu.be)

Found

Record
v=DMARC1; p=reject; rua=mailto:dmarc@yewtu.be,mailto:fbcb28fc-e41b-42b1-bee4-8b90ff3fef0b@dmarc.scw-tem.cloud; ruf=mailto:dmarc@yewtu.be,mailto:fbcb28fc-e41b-42b1-bee4-8b90ff3fef0b@dmarc.scw-tem.cloud; fo=1
Found at
_dmarc.yewtu.be
External report address
mailto:fbcb28fc-e41b-42b1-bee4-8b90ff3fef0b@dmarc.scw-tem.cloud (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
ruamailto:dmarc@yewtu.be,mailto:fbcb28fc-e41b-42b1-bee4-8b90ff3fef0b@dmarc.scw-tem.cloudAggregate report addresses
rufmailto:dmarc@yewtu.be,mailto:fbcb28fc-e41b-42b1-bee4-8b90ff3fef0b@dmarc.scw-tem.cloudFailure report addresses
fo1Failure reporting options

Checks

  • ✓ Policy: reject #4
    DMARC policy is set to 'reject', which provides the strongest protection against email spoofing.
  • ✓ 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:dmarc@yewtu.be, mailto:fbcb28fc-e41b-42b1-bee4-8b90ff3fef0b@dmarc.scw-tem.cloud
  • ✓ Subdomain policy: reject #20
    Subdomains are covered by policy 'reject'.
  • ✓ External report addresses authorized #29
    Report addresses in other domains have published their authorization.

DKIM

warn

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

DNSSEC

warn

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

MX

warn

1 mail server

Found

PriorityHostRecordsReverse DNS
10mx.yewtu.beCNAME mx.emiliendevos.be A 152.67.94.22 A 152.70.188.178 AAAA 2001:bc8:1d90:1458:dc00:ff:fe2b:c147no PTR no PTR c147-fe2b-ff-dc00-1458-1d90-bc8-2001.instances.scw.cloud (does not resolve back)

Checks

  • ✓ 1 MX record #9
    Found 1 MX records for this domain.
  • ✓ All hosts resolve #10
    All MX records resolve to valid IP addresses.
  • ✓ All hosts have IPv6 #11
    All MX records resolve to IPv6 addresses.
  • !
    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.
  • !
    Hosts are CNAMEs
    MX records must point to a host name with A/AAAA records, not to a CNAME: mx.yewtu.be -> mx.emiliendevos.be
    #22
  • !
    Addresses without reverse DNS
    These MX addresses have no PTR record, which many receivers treat as a spam signal: 152.67.94.22 (mx.yewtu.be), 152.70.188.178 (mx.yewtu.be). Ask your hosting provider to set one.
    #30

TLS

warn

MTA-STS testing · TLS-RPT · DANE on 0 of 1 MX hosts

Found

MTA-STS record
v=STSv1; id=705348472672487978
Policy URL
https://mta-sts.yewtu.be/.well-known/mta-sts.txt
Mode
testing
Allowed MX
mx.emiliendevos.be
Max age
604800 seconds
TLS-RPT record
v=TLSRPTv1; rua=mailto:postmaster@emiliendevos.be

DANE (TLSA records)

MX hostTLSADNSSEC
mx.yewtu.benone-

Checks

  • ✓ Record published #32
    MTA-STS record found with id 705348472672487978.
  • !
    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
  • !
    MX hosts missing from policy
    These MX hosts are not listed in the MTA-STS policy (mx: mx.emiliendevos.be): mx.yewtu.be. This will break delivery once the policy is enforced.
    #34
  • ✓ Reports enabled #35
    TLS reports are sent to: mailto:postmaster@emiliendevos.be
  • 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

BIMI

info

No BIMI record

Checks

  • i
    Not configured
    BIMI shows your logo next to your mail in supporting mail clients. It requires DMARC enforcement.
    #38