Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kalkuel-dresden.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 17:07:48 UTC · ↺ Refresh
MX Hostnames
- kalkueldresden-de01i.mail.protection.outlook.com
MX Priorities
- kalkueldresden-de01i.mail.protection.outlook.com: 10
A / AAAA Records
- 81.169.255.49 ↩ h2833399.stratoserver.net
- 2a01:238:42c7:ec00:a45a:5603:2dfb:b78f (no PTR)
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns4.stratoserver.net hostmaster.strato-rz.de 2020050834 86400 7200 604800 300
Primary NS (mname)
ns4.stratoserver.net
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050834
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns3.stratoserver.net
ns4.stratoserver.net
SPF Record
✓ Strict (-all)
v=spf1 a mx include:spf.tmes.trendmicro.eu include:spf.strold.io include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- tmes=0eaac0c7ae712906018364263b7ffb4f
- SPFv=spf1 a mx include:spf.tmes.trendmicro.eu include:spf.strold.io include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
- MS=ms45746823
- google-site-verification=l1kF6NckoC7GBdEc1sp5Gymbiirq3iWXRznzE3lvrP4
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 kalkuel-dresden.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits