Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
probiogen.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 18:30:43 UTC · ↺ Refresh
MX Hostnames
- probiogen-de.mail.protection.outlook.com
MX Priorities
- probiogen-de.mail.protection.outlook.com: 10
A / AAAA Records
- 199.60.103.127 (no PTR)
Mail Server IPs
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
shades13.rzone.de hostmaster.strato-rz.de 2020051056 86400 7200 604800 300
Primary NS (mname)
shades13.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020051056
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
shades13.rzone.de
docks02.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:104.151.21.176/28 ip6:2001:1438:4017:cd00::/56 include:_spf.rexx-suite.com include:26969326.spf01.hubspotemail.net include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo 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
4 records- atlassian-sending-domain-verification=de16b2f3-179a-4769-b8dc-79ed71e5f0ed
- apple-domain-verification=fknZLwpHtCyaIGhB
- atlassian-domain-verification=87UphZBbGd2YPFrnBJAYfjhV52AnJvcFcosrGvlAlC2w/rr9XlHluoF9Rd6X21D6
- SPFv=spf1 ip4:104.151.21.176/28 ip6:2001:1438:4017:cd00::/56 include:_spf.rexx-suite.com include:26969326.spf01.hubspotemail.net include:spf.protection.outlook.com -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for probiogen.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits