blackslash.de

Valid Email Server
Domain Lookup › blackslash.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
blackslash.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 12:41:32 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 148.251.16.54 ↩ static.54.16.251.148.clients.your-server.de

Mail Server IPs

  • 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1006.awsdns-61.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1006.awsdns-61.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1185.awsdns-20.org
ns-1948.awsdns-51.co.uk
ns-342.awsdns-42.com
ns-1006.awsdns-61.net

SPF Record

✓ Strict (-all)
v=spf1 ip4:148.251.47.250/32 ip4:148.251.16.48/29 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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

3 records
  • MS=ms51105801
  • https://issues.sonatype.org/browse/OSSRH-53228
  • SPFv=spf1 ip4:148.251.47.250/32 ip4:148.251.16.48/29 include:spf.protection.outlook.com -all
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