Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
techtube.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 06:52:44 UTC · ↺ Refresh
MX Hostnames
- mx2.hc6064-96.iphmx.com
- mx1.hc6064-96.iphmx.com
MX Priorities
- mx1.hc6064-96.iphmx.com: 0
- mx2.hc6064-96.iphmx.com: 1
A / AAAA Records
- 104.21.36.99 (no PTR)
- 172.67.192.79 (no PTR)
- 2606:4700:3034::6815:2463 (no PTR)
- 2606:4700:3036::ac43:c04f (no PTR)
Mail Server IPs
- 68.232.146.237 ↩ esa1.hc6064-96.iphmx.com
- 68.232.149.193 ↩ esa2.hc6064-96.iphmx.com
SOA Record
Raw SOA
serena.ns.cloudflare.com dns.cloudflare.com 2399729761 10000 2400 604800 1800
Primary NS (mname)
serena.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399729761
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
serena.ns.cloudflare.com
zeus.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:emailsrvr.com include:sendgrid.net ip4:173.254.39.158 ip4:143.198.13.217 ip4:165.227.180.86 ip4:198.173.66.204 exists:%{i}.spf.hc6064-96.iphmx.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=r; aspf=s; sp=reject; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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- SPFv=spf1 include:spf.protection.outlook.com include:emailsrvr.com include:sendgrid.net ip4:173.254.39.158 ip4:143.198.13.217 ip4:165.227.180.86 ip4:198.173.66.204 exists:%{i}.spf.hc6064-96.iphmx.com ~all
- MS=ms59064451
- knowbe4-site-verification=acc818af1cb37922a5565d82056223e6
Full email verification for techtube.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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