MailAuthWatch
B75/100

skype.com

1 fix stands between this domain and a clean A. 1 item below, ordered by how much inbox it is costing you.

SPF PASSDKIM NOT FOUNDDMARC REJECTMX OK
Monitor this domainRe-run checkMeasured 0s ago · 200 ms · public DNS

Fix these, in this order

ranked by impact
1
No DKIM key found under 79 common selectors.

Either DKIM signing is off, or it uses a selector we did not probe. Without DKIM, forwarded mail and anything that breaks SPF fails DMARC.

Do this: in Microsoft 365 Defender go to Email & collaboration → Policies → DKIM, publish the two CNAME records (selector1 and selector2) and enable signing.

Records found

SPF · TXT
v=spf1 include:_spf-ssg-a.microsoft.com ip4:91.190.218.48 ip4:91.190.216.100 -all
DMARC · _dmarc.skype.com
v=DMARC1; p=reject; pct=100; rua=mailto:rua@dmarc.microsoft,mailto:skype@rua.netcraft.com; fo=1; ruf=mailto:rua@dmarc.microsoft,mailto:skype@ruf.netcraft.com;
DKIM · 0 of 79 selectors
none under common selectors
MX · Microsoft 365
10 skype-com.mail.protection.outlook.com

Grade history

Free checks keep nothing. Monitoring records every daily measurement and alerts you on change.
History goes back as far as your subscription.

SPF OK

v=spf1 include:_spf-ssg-a.microsoft.com ip4:91.190.218.48 ip4:91.190.216.100 -all
DNS lookups
2 of 10 allowed
Final mechanism
-all
  • OK No problems detected.

Include tree

2 / 10
skype.com0
└─ include:_spf-ssg-a.microsoft.com+2
     └─ spf.protection.outlook.com

DKIM Not found

DKIM selectors cannot be listed from DNS, so 79 selectors used by common providers were probed. "Not found" means none of those selectors exist; the domain may still sign with a custom selector.

  • WarningNo DKIM key found under 79 common selectors. If you know your selector, add it to the check; if you have no DKIM at all, enable it at your mail provider.

DMARC OK

v=DMARC1; p=reject; pct=100; rua=mailto:rua@dmarc.microsoft,mailto:skype@rua.netcraft.com; fo=1; ruf=mailto:rua@dmarc.microsoft,mailto:skype@ruf.netcraft.com;
Policy
p=reject
Applies to
100% of failing mail
Aggregate reports
mailto:rua@dmarc.microsoft mailto:skype@rua.netcraft.com
  • OK No problems detected.

Mail exchange and extras

  • OK No problems detected.
MTA-STS
Not published optional: enforces TLS for inbound mail
TLS-RPT
Not published
BIMI
Not published optional: brand logo in inboxes, requires p=quarantine or reject

How the grade is calculated

Score 75/100. SPF present and valid. SPF ends with -all. DMARC present and valid. DMARC policy is reject. DMARC aggregate reporting enabled. SPF contributes up to 35 points, DKIM up to 25, DMARC up to 40 (policy strength and reporting). Any critical issue caps the grade at C. Lookups that failed are shown as "not measured" and never counted as missing.

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