Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
postobon.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-09 08:24:14 UTC · ↺ Refresh
MX Hostnames
- postolux.in.tmes.trendmicro.com
MX Priorities
- postolux.in.tmes.trendmicro.com: 5
A / AAAA Records
- 162.159.136.54 (no PTR)
Mail Server IPs
- 18.208.22.79 ↩ in.tmes.trendmicro.com
- 18.208.22.77 ↩ in.tmes.trendmicro.com
- 18.208.22.80 ↩ in.tmes.trendmicro.com
- 18.208.22.78 ↩ in.tmes.trendmicro.com
SOA Record
Raw SOA
nameserver01.mi.com.co hostmaster.postobon.com 1775692800 10800 3600 1209600 3600
Primary NS (mname)
nameserver01.mi.com.co
Admin Email (rname)
hostmaster@postobon.com
Serial
1775692800
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
nameserver03.mi.com.co
nameserver01.mi.com.co
nameserver04.mi.com.co
nameserver02.mi.com.co
SPF Record
✓ Strict (-all)
v=spf1 ip4:168.228.126.117 ip4:34.199.214.23 ip4:129.41.174.163 ip4:18.208.22.102 include:spf.tmes.trendmicro.com include:spf.protection.outlook.com include:_spf.elasticemail.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; ri=86400; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:168.228.126.117 ip4:34.199.214.23 ip4:129.41.174.163 ip4:18.208.22.102 include:spf.tmes.trendmicro.com include:spf.protection.outlook.com include:_spf.elasticemail.com -all
Full email verification for postobon.com
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