Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
itcenter.pl
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 23:00:06 UTC · ↺ Refresh
MX Hostnames
- itcenter-pl.mail.protection.outlook.com
MX Priorities
- itcenter-pl.mail.protection.outlook.com: 10
A / AAAA Records
- 104.21.23.154 (no PTR)
- 172.67.211.177 (no PTR)
- 2606:4700:3030::6815:179a
- 2606:4700:3031::ac43:d3b1
Mail Server IPs
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
isaac.ns.cloudflare.com dns.cloudflare.com 2400226660 10000 2400 604800 1800
Primary NS (mname)
isaac.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400226660
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
rose.ns.cloudflare.com
isaac.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.atlassian.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
10 records- 68bdf1ed27731e791c1c4ec2a668dd6bc9812cb4a9b3e296b15667f3787d2164
- MS=ms15584652
- MS=ms29679385
- apple-domain-verification=0MjVkt5ffSYVWu4r
- atlassian-domain-verification=NKZzUhCJR2dPTtm/p6/y65qa3BpUympt9wfdHpdrWRLtcpzsQdS/ChDiW6qavQ15
- atlassian-domain-verification=n299wZdL8SOz0yePXbQynwlyzYKIQ2a7bZeicFWS5ZfJaAuzGiPOzTYMex5sPeCT
- atlassian-sending-domain-verification=1f863b51-4e3f-4b3b-8304-9a80d8460c8f
- google-site-verification=yqlADswtVyQbwlfpj0BjUGXowt3Yg5KJXZb3LlnnBak
- mojecertpl-site-verification-cEi8FmmNqf6ZbFrluXZUs5JKytktqkFO
- SPFv=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.atlassian.net -all
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