Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
isopartner.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 15:33:33 UTC · ↺ Refresh
MX Hostnames
- isopartner-de.mail.protection.outlook.com
MX Priorities
- isopartner-de.mail.protection.outlook.com: 0
A / AAAA Records
- 104.26.0.37 (no PTR)
- 172.67.72.56 (no PTR)
- 104.26.1.37
- 2606:4700:20::681a:25
- 2606:4700:20::681a:125
- 2606:4700:20::ac43:4838
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.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
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
anirban.ns.cloudflare.com dns.cloudflare.com 2397691423 10000 2400 604800 1800
Primary NS (mname)
anirban.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397691423
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
anirban.ns.cloudflare.com
maleah.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mailjet.com mx include:_spf.relay.mailprotect.be include:spf.nl2go.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; ruf=mailto:[email protected]; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
6 records- clj4wmrYYojxeLLD2sXrjhHgVWf5VZQg
- google-site-verification=hKC_UlUNMNaSUpLxDTId_FZ2pZQuydh8nMDIH8-mQxU
- sophos-domain-verification=d0b573228db574cf66032132cc908a7559c0cf32df13f2ebac82ce2286874425
- SPFv=spf1 include:spf.mailjet.com mx include:_spf.relay.mailprotect.be include:spf.nl2go.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
- MS=ms21980697
- apple-domain-verification=cSHzrIb5XzVLZUbV
Full email verification for isopartner.de
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