Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
leinerstift.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 06:10:49 UTC · ↺ Refresh
MX Hostnames
- leinerstift-de.mail.protection.outlook.com
MX Priorities
- leinerstift-de.mail.protection.outlook.com: 0
A / AAAA Records
- 85.13.168.61 ↩ dd56312.kasserver.com
Mail Server IPs
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.ui-global-dns.de hostmaster.1und1.com 2017060169 28800 7200 604800 600
Primary NS (mname)
ns.ui-global-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060169
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns.ui-global-dns.de
ns.ui-global-dns.biz
ns.ui-global-dns.org
ns.ui-global-dns.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a:mail.leinerstift.de a:cmail-lei.dts-security.de include:spf.protection.outlook.com include:spf-de.emailsignatures365.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
5 records- MS=ms10593127
- apple-domain-verification=TvTKef0aE0NPGWVY
- swisssign-check=qIgyqOg4MqDi9oJxDno-6Unxs4g
- _globalsign-domain-verification=_V_xPTrGUmhkaSGx8_nIV8t1yeKhLYKD6gAFTihH35
- SPFv=spf1 mx a:mail.leinerstift.de a:cmail-lei.dts-security.de include:spf.protection.outlook.com include:spf-de.emailsignatures365.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 leinerstift.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits