Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rieckermann.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 22:37:58 UTC · ↺ Refresh
MX Hostnames
- rieckermann-com.mail.protection.outlook.com
MX Priorities
- rieckermann-com.mail.protection.outlook.com: 1
A / AAAA Records
- 104.26.3.75 (no PTR)
- 172.67.71.145 (no PTR)
- 104.26.2.75 (no PTR)
- 2606:4700:20::ac43:4791 (no PTR)
- 2606:4700:20::681a:34b
- 2606:4700:20::681a:24b
Mail Server IPs
- 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
- 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
- 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
chris.ns.cloudflare.com dns.cloudflare.com 2396977684 10000 2400 604800 1800
Primary NS (mname)
chris.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396977684
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
rose.ns.cloudflare.com
chris.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ip4:54.37.206.123 include:spf.protection.outlook.com include:kallidus-suite.com include:_spf.salesforce.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
3 records- SPFv=spf1 mx ip4:54.37.206.123 include:spf.protection.outlook.com include:kallidus-suite.com include:_spf.salesforce.com ~all
- 2105251952324330320
- facebook-domain-verification=y0fxg74l01gvotm3gfg58xy2mxhr1r
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for rieckermann.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits