optoflux.com

Valid Email Server
Domain Lookup › optoflux.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
optoflux.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 05:27:02 UTC · ↺ Refresh

MX Hostnames

  • optoflux-com.mail.protection.outlook.com

MX Priorities

  • optoflux-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 89.107.188.153 ↩ ok16.serverdomain.org

Mail Server IPs

  • 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.namemaster.de ns2.namemaster.de 2016061600 3600 901 1209600 86400
Primary NS (mname)
ns1.namemaster.de
Admin Email (rname)
ns2@namemaster.de
Serial
2016061600
Refresh
3600s
Retry
901s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns2.namemaster.de
ns1.namemaster.de
ns4.namemaster.de
ns3.namemaster.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:93.240.143.110 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

✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 ip4:93.240.143.110 include:spf.protection.outlook.com -all
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