Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rapidengineering.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 10:22:21 UTC · ↺ Refresh
MX Hostnames
- rapidengineering-com.mail.protection.outlook.com
MX Priorities
- rapidengineering-com.mail.protection.outlook.com: 0
A / AAAA Records
- 35.212.75.28 ↩ 28.75.212.35.bc.googleusercontent.com
Mail Server IPs
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1374.awsdns-43.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1374.awsdns-43.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-903.awsdns-48.net
ns-1374.awsdns-43.org
ns-1561.awsdns-03.co.uk
ns-347.awsdns-43.com
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:206.192.100.36 ip4:3.214.204.181 include:servers.mcsv.net include:spf.protection.outlook.com include:spf-003a8101.pphosted.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
selector1._domainkey
✓ Public key: 63 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
8 records- google-site-verification=88Pip5WLuHnUR-gmjXIErDDzdxaSNkd5jpjEQ9azGuA
- knowbe4-site-verification=95e1fc93d1fc7ad7b709dfe1d0fda662
- ppe-268a9465d895ae9aa39e
- SPFv=spf1 mx ip4:206.192.100.36 ip4:3.214.204.181 include:servers.mcsv.net include:spf.protection.outlook.com include:spf-003a8101.pphosted.com -all
- 21d3vcd0n63s4uup62vqgmusi4
- MS=ms35249415
- MS=ms42360148
- MS=ms61188736
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