Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rnb.com.mx
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-28 09:03:23 UTC · ↺ Refresh
MX Hostnames
- mail.rnb.com.mx
MX Priorities
- mail.rnb.com.mx: 10
A / AAAA Records
- 72.52.252.194 ↩ mail.sysop14.com
Mail Server IPs
- 72.52.252.194 ↩ mail.sysop14.com
SOA Record
Raw SOA
ns.rnb.com.mx soporte\.sistemas.rnb.com.mx 1774535418 10800 3600 604800 10800
Primary NS (mname)
ns.rnb.com.mx
Admin Email (rname)
soporte\@sistemas.rnb.com.mx
Serial
1774535418
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns.rnb.com.mx
SPF Record
✓ Strict (-all)
v=spf1 ip4:72.52.252.194 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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
4 records- google-site-verification=ZmI_alw6YLEmS0r9B4A8OdvFeRam3TkrsAac8llhujw
- SPFv=spf1 ip4:72.52.252.194 a mx -all
- _vwmtnworelr8e000eikhpjxc3ivi7bg
- _0twdci70gd7ns1awrvnfc1ohbwgoqjd
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