Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ruud.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 06:45:04 UTC · ↺ Refresh
MX Hostnames
- ruud-com.mail.protection.outlook.com
MX Priorities
- ruud-com.mail.protection.outlook.com: 10
A / AAAA Records
- 18.238.49.2 ↩ server-18-238-49-2.jfk52.r.cloudfront.net
- 18.238.49.44 ↩ server-18-238-49-44.jfk52.r.cloudfront.net
- 18.238.49.61
- 18.238.49.81
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1939.awsdns-50.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1939.awsdns-50.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1939.awsdns-50.co.uk
ns-416.awsdns-52.com
ns-954.awsdns-55.net
ns-1154.awsdns-16.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:65.254.216.92 ip4:63.76.193.50 ip4:68.232.147.175 ip4:68.232.148.126 ip4:68.232.148.205 ip4:68.232.157.250 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- mAiW6CvL2FxhCIZMRyBRS/Brf4ibSB7YOfkqs3GC03XWd90Dg43douByogrn7zsthax7FypAJlEDeBcVpIp8FQ==
- ms-domain-verification=6a3b26b0-88ef-4a6e-aa07-5c3b85e09947
- oHSntWLyRicB9NQOpYio7Y3Uq0GlCnwJqRdzJw4nwoKc7QQSZap0vuta1yuLCQ9eKbGTp/V25aYhV/l/cCwrsA==
- SPFv=spf1 include:spf.protection.outlook.com ip4:65.254.216.92 ip4:63.76.193.50 ip4:68.232.147.175 ip4:68.232.148.126 ip4:68.232.148.205 ip4:68.232.157.250 -all
- 96zjwnyttn1tq6jpc0nls64j6s9dzqrl
- MS=ms11594348
- _gyq3pd8pwctr0mdje2c2ocejuced74q
- dUQcAssHVlX9RYEPPr6U3zf1LTsaCItA4T0p+OtTQlI=
- google-site-verification=RW-FNrG6WbHdb3F3OPfj2m_xXM0Mgh6BjzNna2o1CwQ
- include:_spf.psm.knowbe4.com
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