sertec20.com

Valid Email Server
Domain Lookup › sertec20.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
sertec20.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-23 04:10:42 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • spam4.hubara.net
  • spam2.hubara.net
  • spam1.hubara.net
  • spam3.hubara.net

MX Priorities

  • spam2.hubara.net: 20
  • spam3.hubara.net: 30
  • spam1.hubara.net: 10
  • spam4.hubara.net: 40

A / AAAA Records

  • 178.23.56.250 ↩ smtp.agcapa.com

Mail Server IPs

  • 38.71.16.244 ↩ fe2-r2-in.la10.l.antispamcloud.com
  • 2001:550:2:3::62:100 ↩ fe2-r2-in.la10.l.antispamcloud.com
  • 38.89.254.156 ↩ fe1-r2-in.ch03.l.antispamcloud.com
  • 2001:550:2:61::2fc:100 (no PTR)
  • 38.101.250.150 ↩ fe3-r2-in.atl06.l.antispamcloud.com
  • 2001:550:2:78::ca:100 ↩ fe3-r2-in.atl06.l.antispamcloud.com

SOA Record

Raw SOA ns1.hubara.net ispadmin.hubara.es 2026082503 7200 3600 1209600 86400
Primary NS (mname)
ns1.hubara.net
Admin Email (rname)
ispadmin@hubara.es
Serial
2026082503
Refresh
7200s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns2.hubara.net
ns1.hubara.net
ns4.hubara.org
ns3.hubara.org

SPF Record

✓ Strict (-all)
v=spf1 a include:_spf.hubara.net include:msrv-smtp-01.aspl.es include:spf.protection.outlook.com ip4:2.136.236.137/32 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;sp=none;adkim=r;aspf=s;pct=100;fo=1;rf=afrf;ri=86400;rua=mailto:[email protected];ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 392 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=D7CE81F7ACC5CA2BF61861F17F622D94FE273B92
  • MS=ms21292650
  • SPFv=spf1 a include:_spf.hubara.net include:msrv-smtp-01.aspl.es include:spf.protection.outlook.com ip4:2.136.236.137/32 -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 sertec20.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits