Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
opt3.com.br
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 18:10:05 UTC · ↺ Refresh
MX Hostnames
- aspmx3.googlemail.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx2.googlemail.com
MX Priorities
- aspmx.l.google.com: 0
- alt1.aspmx.l.google.com: 5
- aspmx2.googlemail.com: 10
- alt2.aspmx.l.google.com: 5
- aspmx3.googlemail.com: 10
A / AAAA Records
- 67.23.244.7 ↩ sbr15.hostdime.com.br
Mail Server IPs
- 64.233.180.26 ↩ pe-in-f26.1e100.net
- 2607:f8b0:4004:c1b::1a ↩ wv-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
SOA Record
Raw SOA
ns10801.dizinc.com hdbralerts.gmail.com 2026012301 3600 1800 1209600 86400
Primary NS (mname)
ns10801.dizinc.com
Admin Email (rname)
hdbralerts@gmail.com
Serial
2026012301
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns10802.dizinc.com
ns10801.dizinc.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com ~all +a +mx +ip4:67.23.244.57 +ip4:67.23.244.58 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
1 record- SPFv=spf1 include:_spf.google.com ~all +a +mx +ip4:67.23.244.57 +ip4:67.23.244.58 -all
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