Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cosco.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 20:33:32 UTC · ↺ Refresh
MX Hostnames
- cosco-de.mail.protection.outlook.com
MX Priorities
- cosco-de.mail.protection.outlook.com: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
- 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
- 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns31.domaincontrol.com dns.jomax.net 2025071000 28800 7200 604800 600
Primary NS (mname)
ns31.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025071000
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns31.domaincontrol.com
ns32.domaincontrol.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];fo=s
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- MS=ms10651439
- SPFv=spf1 include:spf.protection.outlook.com mx ~all
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