Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stlb.net
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 15:34:21 UTC · ↺ Refresh
MX Hostnames
- stlb-net.mx1.arsmtp.com
- stlb-net.mx2.arsmtp.com
MX Priorities
- stlb-net.mx2.arsmtp.com: 20
- stlb-net.mx1.arsmtp.com: 10
A / AAAA Records
- 216.55.105.140 ↩ stlbmanufacturing.com
Mail Server IPs
- 8.19.118.227 ↩ server2023.appriver.com
- 8.31.233.246 ↩ server2022.appriver.com
SOA Record
Raw SOA
ns3.worldnic.com namehost\@worldnic.com 125012017 10800 3600 604800 3600
Primary NS (mname)
ns3.worldnic.com
Admin Email (rname)
namehost\@worldnic@com
Serial
125012017
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns3.worldnic.com
ns4.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:[email protected];ri=86400;aspf=r;adkim=r;fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
3 records- MS=ms12509206
- brevo-code:1f8d202a05f5464c4d2c975be684fb6d
- SPFv=spf1 include:spf.protection.outlook.com -all
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