it-syn.de

Valid Email Server
Domain Lookup › it-syn.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
it-syn.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-29 02:15:10 UTC · ↺ Refresh

MX Hostnames

  • itsyn-de0e.mail.protection.outlook.com

MX Priorities

  • itsyn-de0e.mail.protection.outlook.com: 10

A / AAAA Records

  • 2.207.192.47 ↩ dslb-002-207-192-047.002.207.pools.vodafone-ip.de

Mail Server IPs

  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
  • 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com

SOA Record

Raw SOA dns.dns1.de hostmaster.internetwire.de 2026020413 28800 7200 604800 86400
Primary NS (mname)
dns.dns1.de
Admin Email (rname)
hostmaster@internetwire.de
Serial
2026020413
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

dns.dns1.de
dns.dns2.de
dns.dns3.de
dns.dns4.de

SPF Record

✓ Strict (-all)
v=spf1 a mx a:relay01.rz-niedersachsen.de ip4:81.14.212.45 ip4:2.207.192.9 ip4:81.14.212.34 ip4:80.74.59.130 ip4:2.207.192.13 ip4:195.4.144.72 ip4:81.14.212.34 a:mail.it-syn.de include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 3 found
selector1._domainkey
selector2._domainkey
dkim._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

3 records
  • SPFv=spf1 a mx a:relay01.rz-niedersachsen.de ip4:81.14.212.45 ip4:2.207.192.9 ip4:81.14.212.34 ip4:80.74.59.130 ip4:2.207.192.13 ip4:195.4.144.72 ip4:81.14.212.34 a:mail.it-syn.de include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
  • apple-domain-verification=wXW4nn2zmZnXcwcr
  • MS=DD8A9F50D55D94211C9F1D62830158AF208E8057Kopieren
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