Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grupoguma.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 02:45:59 UTC · ↺ Refresh
MX Hostnames
- grupoguma-mx.mail.protection.outlook.com
MX Priorities
- grupoguma-mx.mail.protection.outlook.com: 0
A / AAAA Records
- 148.243.128.94 ↩ 148-243-128-94.static.axtel.net
Mail Server IPs
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
pdns07.domaincontrol.com dns.jomax.net 2026031908 28800 7200 604800 600
Primary NS (mname)
pdns07.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026031908
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
pdns07.domaincontrol.com
pdns08.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 mx a:grupoguma.mx ip4:200.38.255.64/26 ip4:148.243.128.19 include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
4 records- SPFv=spf1 mx a:grupoguma.mx ip4:200.38.255.64/26 ip4:148.243.128.19 include:spf.protection.outlook.com -all
- i85921tlvaegi1gvcos26chma6
- ciscocidomainverification=4fb4a0852f7e85f23e8f14ef13b3dde7a8ea0b5e2ff0301b18bc1404a8a78794
- MS=ms40272699
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