Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rbicorp.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 16:17:31 UTC · ↺ Refresh
MX Hostnames
- rbicorp-com.mail.protection.outlook.com
MX Priorities
- rbicorp-com.mail.protection.outlook.com: 0
A / AAAA Records
- 66.103.146.149 (no PTR)
Mail Server IPs
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
auth03.ns.uu.net hostmaster.uu.net 3999111753 21600 3600 1728000 900
Primary NS (mname)
auth03.ns.uu.net
Admin Email (rname)
hostmaster@uu.net
Serial
3999111753
Refresh
21600s
Retry
3600s
Expire
1728000s
Minimum TTL
900s
Nameservers (NS)
auth03.ns.uu.net
auth50.ns.uu.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:66.103.146.147 ip4:65.201.135.254 include:spf.ess.barracudanetworks.com include:_spf.safewebservices.com include:servers.mcsv.net include:spf.protection.outlook.com mx include:spf.mailigen.com include:spf.sendinblue.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 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
7 records- mailigen-site-verification=0f1c88e0b5f1fd1b9333910e5dd5043d
- /wYT/VUwB2sYJOk9py1fhXHw9AuQyRZBBBxBwjf4xaBegfklJhhme+1+Ua/bYAGJ7oiiTyOgAsgRpqUr95a9rQ==
- sendinblue-code:3f6aa239cc1fd46db17c421caf1ebfa0
- MS=E319C6B571FF1092073A5BDCF5BE9438BCB4F94C
- ZA=NfYcwNI1HRTaT1XbKl4mBA==
- SPFv=spf1 ip4:66.103.146.147 ip4:65.201.135.254 include:spf.ess.barracudanetworks.com include:_spf.safewebservices.com include:servers.mcsv.net include:spf.protection.outlook.com mx include:spf.mailigen.com include:spf.sendinblue.com -all
- MS=ms78907847
Full email verification for rbicorp.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits