Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
holmco.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 14:17:03 UTC · ↺ Refresh
MX Hostnames
- mail.holmco.de
- holmco-de.mail.protection.outlook.com
MX Priorities
- holmco-de.mail.protection.outlook.com: 0
- mail.holmco.de: 10
A / AAAA Records
- 185.30.32.227
Mail Server IPs
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 194.25.159.142 (no PTR)
- 194.25.159.139 ↩ mail.holmco.de
SOA Record
Raw SOA
ns.udag.de hostmaster.united-domains.de 2024092037 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024092037
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.udag.net
ns.udag.org
ns.udag.de
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:194.25.159.136/29 ip4:37.17.224.0/21 ip4:185.30.32.0/22 ip4:88.82.224.0/19 ip4:45.153.56.0/22 ip4:178.19.214.86/29 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:_smtp.udag.de ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
3 records- SPFv=spf1 ip4:194.25.159.136/29 ip4:37.17.224.0/21 ip4:185.30.32.0/22 ip4:88.82.224.0/19 ip4:45.153.56.0/22 ip4:178.19.214.86/29 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:_smtp.udag.de ~all
- xu1gMpGLpQU6OkNeIxc3MyJBufjJaLiV
- google-site-verification=QhAWEy_sN2hR52FZDbpU5kQ82Dn4bPcasbpIbnZrJ8k
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