Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
red-oyster.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 04:14:22 UTC · ↺ Refresh
MX Hostnames
- redoyster-com0i.mail.protection.outlook.com
MX Priorities
- redoyster-com0i.mail.protection.outlook.com: 0
A / AAAA Records
- 62.221.213.221 ↩ tenghu.savviihq.com
Mail Server IPs
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
SOA Record
Raw SOA
ns101.auroradns.eu admin.auroradns.eu 2019011601 86400 7200 604800 300
Primary NS (mname)
ns101.auroradns.eu
Admin Email (rname)
admin@auroradns.eu
Serial
2019011601
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns102.auroradns.nl
ns103.auroradns.info
ns101.auroradns.eu
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:37.48.122.23 ip4:62.221.213.221 include:spf.protection.outlook.com include:_spf4.pcextreme.nl include:_spf6.pcextreme.nl ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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- SPFv=spf1 ip4:37.48.122.23 ip4:62.221.213.221 include:spf.protection.outlook.com include:_spf4.pcextreme.nl include:_spf6.pcextreme.nl ~all
- MS=ms46057107
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