Domain Overview
DNS: ✓ 1h ago
Checker: ✓ 1h ago
guauandcat.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-23 10:11:20 UTC · ↺ Refresh
MX Hostnames
- guauandcat-com.mail.protection.outlook.com
MX Priorities
- guauandcat-com.mail.protection.outlook.com: 0
A / AAAA Records
- 217.71.200.169 ↩ 9f64eb77-58ea-44ee-887a-df407cf77360.clouding.host
Mail Server IPs
- 52.101.103.143 ↩ mail-miypr03cu00107.inbound.protection.outlook.com
- 52.101.91.159 ↩ mail-matpr04cu00207.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.185.24 ↩ mail-zrxpr07cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca48::8 ↩ mail-miypr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1078.ui-dns.org hostmaster.1und1.com 2017060264 28800 7200 604800 600
Primary NS (mname)
ns1078.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060264
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1091.ui-dns.de
ns1091.ui-dns.com
ns1078.ui-dns.org
ns1113.ui-dns.biz
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- apple-domain-verification=JBxQ6suTrWaxlVFK
- MS=CE40C167CB404AB561D66D0B675A4EE4A437E1C4
- Acumbamail-domain-verification: e06a3cec-8de5-11ee-ad17-005056bd5094
- MS=ms32298898
- SPFv=spf1 include:spf.protection.outlook.com ~all
- google-site-verification=UyiHGigijqZsa6nQMbbE60pxXdjlxEZEd6ZjR27gN4s
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 guauandcat.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits