coseco.de

Valid Email Server
Domain Lookup › coseco.de

Domain Overview

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

Checked via [email protected] · 2026-03-28 23:34:13 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • coseco-de.mail.protection.outlook.com: 20

A / AAAA Records

  • 35.161.126.63 ↩ ec2-35-161-126-63.us-west-2.compute.amazonaws.com

Mail Server IPs

  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.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

SOA Record

Raw SOA docks09.rzone.de hostmaster.strato-rz.de 2020052357 86400 7200 604800 300
Primary NS (mname)
docks09.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020052357
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks09.rzone.de
shades19.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:195.62.123.52 include:_spf.strato.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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=ms84391714
  • google-site-verification=WVTqHoVeHDh0C3PxeEST-gNqtXUB-g2vdi4P1eVG09g
  • SPFv=spf1 include:spf.protection.outlook.com ip4:195.62.123.52 include:_spf.strato.com -all
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