Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bsl-online.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 12:34:43 UTC · ↺ Refresh
MX Hostnames
- bslonline-de0i.mail.protection.outlook.com
MX Priorities
- bslonline-de0i.mail.protection.outlook.com: 100
A / AAAA Records
- 78.47.106.48 ↩ dedi4938.your-server.de
Mail Server IPs
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.popidns.de domnoc.pop-i.de 1718280004 5400 3600 1209600 300
Primary NS (mname)
ns1.popidns.de
Admin Email (rname)
domnoc@pop-i.de
Serial
1718280004
Refresh
5400s
Retry
3600s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns2.popidns.eu
ns1.popidns.de
SPF Record
✓ Strict (-all)
v=spf1 a:dlggroup.mail.protection.iqsuite.com a:emita.mittwald.de ip4:62.55.182.68 ip4:185.249.116.95 ip4:185.249.116.96 ip4:152.73.247.26 ip4:46.22.43.13 ip4:217.150.150.102 ip4:46.22.43.14 ip4:88.79.101.34 include:kundenserver.de include:spf-service.sivdc.services include:agenturserver.de include:spf.protection.outlook.com include:spf.eu.exclaimer.net ip4:104.40.229.156 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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- MS=ms18550955
- SPFv=spf1 a:dlggroup.mail.protection.iqsuite.com a:emita.mittwald.de ip4:62.55.182.68 ip4:185.249.116.95 ip4:185.249.116.96 ip4:152.73.247.26 ip4:46.22.43.13 ip4:217.150.150.102 ip4:46.22.43.14 ip4:88.79.101.34 include:kundenserver.de include:spf-service.sivdc.services include:agenturserver.de include:spf.protection.outlook.com include:spf.eu.exclaimer.net ip4:104.40.229.156 -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 bsl-online.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits