open-up.ch

Valid Email Server
Domain Lookup › open-up.ch

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
open-up.ch
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 16:56:26 UTC · ↺ Refresh

MX Hostnames

  • openup-ch01b.mail.protection.outlook.com

MX Priorities

  • openup-ch01b.mail.protection.outlook.com: 0

A / AAAA Records

  • 193.33.128.144 ↩ srv63.tophost.ch

Mail Server IPs

  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com

SOA Record

Raw SOA ns1-33.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-33.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns4-33.azure-dns.info
ns1-33.azure-dns.com
ns2-33.azure-dns.net
ns3-33.azure-dns.org

SPF Record

✓ Strict (-all)
v=spf1 ip4:51.89.73.208/28 ip4:147.135.249.48/28 ip4:54.37.79.226 ip4:213.160.35.36 include:relay.mailchannels.net include:spf.protection.outlook.com include:spfa.myconvento.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._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

2 records
  • SPFv=spf1 ip4:51.89.73.208/28 ip4:147.135.249.48/28 ip4:54.37.79.226 ip4:213.160.35.36 include:relay.mailchannels.net include:spf.protection.outlook.com include:spfa.myconvento.com -all
  • google-site-verification=QvIuWBwNUFt43hlcn_YLaY-yIH7pGVb-tnp5ZTJa9Ns
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