Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rhythmtx.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 05:04:13 UTC · ↺ Refresh
MX Hostnames
- rhythmtx-com.mail.protection.outlook.com
MX Priorities
- rhythmtx-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.21 (no PTR)
- 141.193.213.20 (no PTR)
Mail Server IPs
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1351.awsdns-40.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1351.awsdns-40.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1351.awsdns-40.org
ns-2011.awsdns-59.co.uk
ns-697.awsdns-23.net
ns-8.awsdns-01.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:199.46.117.202 ip4:146.115.3.42 ip4:50.31.46.70 include:spf.sendinblue.com include:_spf.salesforce.com include:spf.mailjet.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- box-domain-verification=b2dd960332deec8a93f6d5aeabb75cdded3f5c515b056d03241633c6787f3677
- deepl-domain-verification=0f258792b4534b50855d17f64e009811
- smartsheet-site-validation=IpWUCcd2lO5IV7DXTKfeGePX8zxtYRHO
- sophos-domain-verification=6598edbe7f0fadd7e50ca4e22f12d142f5c03cf3e6f932e29ec7bf38445be21e
- SPFv=spf1 ip4:199.46.117.202 ip4:146.115.3.42 ip4:50.31.46.70 include:spf.sendinblue.com include:_spf.salesforce.com include:spf.mailjet.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all
- zywave-domain-verification=oSxfY3D6ug+AQ4pVN6jezWKygpI+CvlPzYO26Pagh3I=
- 0ed1fe018ade02cdb53d27454eaefeb3c95f339721
- MS=ms97955722
- Sendinblue-code:d670ff54e3de73a12562212969c03410
- adobe-idp-site-verification=99525053649e10560493f5f1b7f60a4d2bac07e6855302163fedd83d114b90da
- apple-domain-verification=9kAPxQVnotIxscIf
Full email verification for rhythmtx.com
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