Domain Overview
DNS: ✓ 1d ago
Checker: ✓ 1d ago
cotown.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-09-23 04:10:58 UTC · ↺ Refresh
MX Hostnames
- cotown-com.mail.protection.outlook.com
MX Priorities
- cotown-com.mail.protection.outlook.com: 0
A / AAAA Records
- 51.103.21.92 (no PTR)
Mail Server IPs
- 52.101.103.143 ↩ mail-miypr03cu00107.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.91.156 ↩ mail-maspr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:c967::c ↩ mail-cpjpr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca48::c ↩ mail-miypr03cu00104.inbound.protection.outlook.com
- 2a01:111:f403:c967::8 ↩ mail-cpjpr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca21::c ↩ mail-matpr04cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.sbd7.servidores-vps.com vgaros.cotown.com 2026032601 10800 3600 1209600 10800
Primary NS (mname)
ns1.sbd7.servidores-vps.com
Admin Email (rname)
vgaros@cotown.com
Serial
2026032601
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
ns1.sbd7.servidores-vps.com
ns2.sbd7.servidores-vps.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:emsd1.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];pct=90;sp=none
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
⚠ Policy applies to 90% of failing messages only
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms56784908
- google-site-verification=QM8DNDwA7jAH8H5VxvOGUE7b75uDlzL2ArgLVh0Jszg
- SPFv=spf1 include:spf.protection.outlook.com include:emsd1.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 cotown.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits