Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bol-systemhaus.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 22:06:58 UTC · ↺ Refresh
MX Hostnames
- bolsystemhaus-de0i.mail.protection.outlook.com
MX Priorities
- bolsystemhaus-de0i.mail.protection.outlook.com: 10
A / AAAA Records
- 52.57.27.29 ↩ ec2-52-57-27-29.eu-central-1.compute.amazonaws.com
- 63.181.141.124 ↩ ec2-63-181-141-124.eu-central-1.compute.amazonaws.com
Mail Server IPs
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1470.awsdns-55.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1470.awsdns-55.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-636.awsdns-15.net
ns-78.awsdns-09.com
ns-1470.awsdns-55.org
ns-1597.awsdns-07.co.uk
SPF Record
✓ Strict (-all)
v=spf1 a mx include:spf.protection.outlook.com include:amazonses.com include:spf.sendinblue.com include:spf.mxg.cloud -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected];sp=quarantine;adkim=r;aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
8 records- swisssign-check=TG8bEpELMExfzRZrzbcKlNoZ-Q8
- teamviewer-sso-verification=f361d3e4665c43d598f34118c5d103e9
- SPFv=spf1 a mx include:spf.protection.outlook.com include:amazonses.com include:spf.sendinblue.com include:spf.mxg.cloud -all
- z6QN3jkKjWyM6R1ND6e9Xkmi8Gxw1zdavbt4jJHPaI6od+9MxEvdlbp4hHqWO1uRQwJ5UP94T5j8oaS5wDcpnA==
- atlassian-domain-verification=VfmKFMa0kEu5anmzBLepRoA1Xr0VpZu4a6F8wquuyEgGGV8jt1ptNYVVt0hDbN0c
- atlassian-sending-domain-verification=f1fb3728-117c-47a5-9744-a8cc5febdd7a
- brevo-code:7a2facba19b0d7be8bcdf59714de0038
- google-site-verification=bjHt7eMQnlvcGKQLf62EZRKuuPWQc-hkCQ4Tjn5jLA0
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 bol-systemhaus.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits