Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
oacpas.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 05:48:19 UTC · ↺ Refresh
MX Hostnames
- oacpas-com.mail.protection.outlook.com
MX Priorities
- oacpas-com.mail.protection.outlook.com: 0
A / AAAA Records
- 151.101.66.159 (no PTR)
Mail Server IPs
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1038.ui-dns.org hostmaster.1und1.com 2017060146 28800 7200 604800 600
Primary NS (mname)
ns1038.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060146
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1056.ui-dns.biz
ns1038.ui-dns.org
ns1063.ui-dns.de
ns1118.ui-dns.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf-us.ionos.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
5 records- v=verifydomain MS=5271278
- MS=ms85415581
- SPFv=spf1 include:_spf-us.ionos.com include:spf.protection.outlook.com ~all
- google-site-verification=JWJ7DHxRLqD895-_kpLWrQUBzIB5GeSgxlhF0mX1PQE
- MS=ms83073312
Full email verification for oacpas.com
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