sefira.cz

Valid Email Server
Domain Lookup › sefira.cz
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
sefira.cz
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-23 05:00:25 UTC · ↺ Refresh

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MX Hostnames

  • sefira-cz.mail.protection.outlook.com

MX Priorities

  • sefira-cz.mail.protection.outlook.com: 1

A / AAAA Records

  • 162.159.135.42 (no PTR)

Mail Server IPs

  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 52.101.103.39 ↩ mail-miypr05cu00207.inbound.protection.outlook.com
  • 52.101.73.155 ↩ mail-am7pr02cu00203.inbound.protection.outlook.com
  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::24 ↩ mail-am6pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca3c::a ↩ mail-zrxpr07cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.websupport.cz admin.websupport.cz 1785851826 7200 2048 1048576 2560
Primary NS (mname)
ns1.websupport.cz
Admin Email (rname)
admin@websupport.cz
Serial
1785851826
Refresh
7200s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s

Nameservers (NS)

ns2.websupport.cz
ns3.websupport.eu
ns1.websupport.cz

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.m1.websupport.sk -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1;ri=604800
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

5 records
  • google-site-verification=bYXZXF2WL-BX4E19EqJuErcUKu5whintF4nFOL75YNc
  • google-site-verification=fR0Q3I7xA1WL_uYkjceJNOiu8H1uPLk83f7e58jenZI
  • atlassian-sending-domain-verification=0d5a841e-7b11-4631-b74e-51f07f52b519
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf.m1.websupport.sk -all
  • atlassian-domain-verification=KxHSzGfFExVJlQe8qHfO3j66o2RyMQvIkUOkvP3hBQSdudAakB1TPg/sGsNJdLPx
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