Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hydrotechusa.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 22:39:41 UTC · ↺ Refresh
MX Hostnames
- mx3.sika.com
- mx4.sika.com
MX Priorities
- mx4.sika.com: 20
- mx3.sika.com: 10
A / AAAA Records
- 104.131.53.186 (no PTR)
Mail Server IPs
- 91.212.75.134 ↩ mx4.sika.com
- 91.212.75.133 ↩ mx3.sika.com
SOA Record
Raw SOA
ns01.sika.com dns.int.sika.com 2398930838 10800 3600 1209600 3600
Primary NS (mname)
ns01.sika.com
Admin Email (rname)
dns@int.sika.com
Serial
2398930838
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns03.sika.com
ns04.sika.com
ns01.sika.com
ns02.sika.com
SPF Record
✓ Strict (-all)
v=spf1 include:aspmx.pardot.com mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; rf=afrf; pct=100; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- SPFv=spf1 include:aspmx.pardot.com mx -all
- MS=ms41832692
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