Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mbitulsa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 07:51:50 UTC · ↺ Refresh
MX Hostnames
- mbitulsa-com.mail.protection.outlook.com
MX Priorities
- mbitulsa-com.mail.protection.outlook.com: 10
A / AAAA Records
- 199.16.172.1 (no PTR)
- 199.16.173.130 (no PTR)
Mail Server IPs
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1108.ui-dns.com hostmaster.1und1.com 2017060160 28800 7200 604800 600
Primary NS (mname)
ns1108.ui-dns.com
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060160
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1054.ui-dns.org
ns1055.ui-dns.de
ns1037.ui-dns.biz
ns1108.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=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]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
1 record- SPFv=spf1 include:spf.protection.outlook.com -all
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