ioeb.de

Valid Email Server
Domain Lookup › ioeb.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
ioeb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-04 17:39:15 UTC · ↺ Refresh

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MX Hostnames

  • ioeb-de.mail.protection.outlook.com

MX Priorities

  • ioeb-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 134.106.87.121 ↩ webc.uni-oldenburg.de
  • 2001:638:705:3f15::121 (no PTR)

Mail Server IPs

  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com

SOA Record

Raw SOA ns01.uni-oldenburg.de ipserv.uni-oldenburg.de 776504970 3600 900 1209600 3600
Primary NS (mname)
ns01.uni-oldenburg.de
Admin Email (rname)
ipserv@uni-oldenburg.de
Serial
776504970
Refresh
3600s
Retry
900s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns02.uni-oldenburg.de
ns01.uni-oldenburg.de
dns-2.dfn.de
arbi.informatik.uni-oldenburg.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:134.106.35.0/24 include:spf.lfda.de include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 a mx ip4:134.106.35.0/24 include:spf.lfda.de include:spf.protection.outlook.com -all
  • ms46472268
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