defru.de

Valid Email Server
Domain Lookup › defru.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
defru.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-30 13:23:05 UTC · ↺ Refresh

MX Hostnames

  • smtp-in.jmc.net
  • smtp-ext.jmc.net
  • defru-de.mail.protection.outlook.com

MX Priorities

  • defru-de.mail.protection.outlook.com: 999
  • smtp-in.jmc.net: 10
  • smtp-ext.jmc.net: 5

A / AAAA Records

  • 194.187.186.50 ↩ neben-effecten.li

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:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 194.187.184.22 ↩ smtp-in.jmc.net

SOA Record

Raw SOA ns1.jmc.net dns-master.jmc.net 2025042206 86400 7200 1209600 3600
Primary NS (mname)
ns1.jmc.net
Admin Email (rname)
dns-master@jmc.net
Serial
2025042206
Refresh
86400s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns1.jmc.net
ns-ext.jmc-dns.de
ns2.jmc.net
ns-ext.jmc-dns.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:194.187.184.0/24 ip4:194.187.185.0/24 ip4:194.187.186.0/24 ip4:194.187.187.0/24 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate 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

7 records
  • MS=C27297E84AF4D1327784AACC7A1EE6622FF34AA8
  • dmn0m34mnr5zb7zjf8z0pk18q71vn9jz
  • SPFv=spf1 ip4:194.187.184.0/24 ip4:194.187.185.0/24 ip4:194.187.186.0/24 ip4:194.187.187.0/24 include:spf.protection.outlook.com ~all
  • test2
  • MS=ms78812444
  • _mjtg0uztva5o2n9sxg2wbfp0sn0eqty
  • U1BiAI/2TQ4D0vhX3zCV2P3OFnl22hT4Wv0bohKstq5eCdwbapqTMDuuWokQx1cGbMyuWS2X53lDS80hB9UpYA==
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