Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zehnder-rittling.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 06:54:45 UTC · ↺ Refresh
MX Hostnames
- zehnderrittling-com01i.mail.protection.outlook.com
MX Priorities
- zehnderrittling-com01i.mail.protection.outlook.com: 0
A / AAAA Records
- 23.185.0.3 (no PTR)
- 2620:12a:8000::3 (no PTR)
- 2620:12a:8001::3
Mail Server IPs
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.directnic.com hostmaster.directnic.com 1381787705 28800 7200 604800 3600
Primary NS (mname)
ns0.directnic.com
Admin Email (rname)
hostmaster@directnic.com
Serial
1381787705
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.directnic.com
ns3.directnic.com
ns2.directnic.com
ns0.directnic.com
SPF Record
✓ Strict (-all)
v=spf1 a:zehndergroup.com a:zehndergroup-com.mail.protection.outlook.com include:zcsend.net ip4:173.195.83.98 ip4:195.49.26.24/29 ip4:195.49.26.32/29 ip4:74.112.121.247 ip4:74.112.121.93 ip4:72.45.246.194 ip4:213.156.227.9 ip4:213.156.239.9 ip4:74.112.121.139 ip4:74.112.121.140 ip4:72.45.246.205 ip4:13.59.135.16 ip4:13.59.20.101 ip4:18.217.63.249 ip4:18.218.193.136 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; fo=1; adkim=r; aspf=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],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
3 records- duo_sso_verification=888F04LsgR0sOwNApS1m6RAU12N6DjZOGzuHOGE1XkXBNGhXtzSx42xn5UEbWvm9
- MS=ms14273457
- SPFv=spf1 a:zehndergroup.com a:zehndergroup-com.mail.protection.outlook.com include:zcsend.net ip4:173.195.83.98 ip4:195.49.26.24/29 ip4:195.49.26.32/29 ip4:74.112.121.247 ip4:74.112.121.93 ip4:72.45.246.194 ip4:213.156.227.9 ip4:213.156.239.9 ip4:74.112.121.139 ip4:74.112.121.140 ip4:72.45.246.205 ip4:13.59.135.16 ip4:13.59.20.101 ip4:18.217.63.249 ip4:18.218.193.136 include:spf.protection.outlook.com include:_spf.psm.knowbe4.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 · Customize →
See demo & docs
Deep verification
Full email verification for zehnder-rittling.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits