Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
postobon.com.co
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 08:39:05 UTC · ↺ Refresh
MX Hostnames
- postolux.in.tmes.trendmicro.com
MX Priorities
- postolux.in.tmes.trendmicro.com: 5
A / AAAA Records
- 34.199.214.23 ↩ ec2-34-199-214-23.compute-1.amazonaws.com
Mail Server IPs
- 18.208.22.80 ↩ in.tmes.trendmicro.com
- 18.208.22.77 ↩ in.tmes.trendmicro.com
- 18.208.22.79 ↩ in.tmes.trendmicro.com
- 18.208.22.78 ↩ in.tmes.trendmicro.com
SOA Record
Raw SOA
nameserver01.mi.com.co hostmaster.postobon.com.co 2026012602 10800 3600 1209600 3600
Primary NS (mname)
nameserver01.mi.com.co
Admin Email (rname)
hostmaster@postobon.com.co
Serial
2026012602
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
nameserver02.mi.com.co
nameserver01.mi.com.co
nameserver04.mi.com.co
nameserver03.mi.com.co
SPF Record
✓ Strict (-all)
v=spf1 ip4:168.228.126.117 ip4:129.41.174.163 ip4:18.208.22.102 include:spf-us.tmes.trendmicro.com include:spf.tmes.trendmicro.com include:spf.protection.outlook.com include:_spf.embluemail.com include:spf.os-ns.com include:spf1.masivapp.com include:23666218.spf08.hubspotemail.net -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1; ri=86400
~ 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
13 records- tmes=790c18fb3c3c65ceb85e91db064af2d4
- odU7or2aukI9XYGlLtzX4l9DSwuiPSXYLB101mYiXa+4gdXta+q7UrsURu3YOyvnMSCNe2ft7fzrXbxoXWZM6Q==
- TQL9HJC9C7MOT5BP60274IF785GZ2B1N0KF9HNRQ
- _kqml2i1hs51wgrfa3qowntfufqy6z1p
- SPFv=spf1 ip4:168.228.126.117 ip4:129.41.174.163 ip4:18.208.22.102 include:spf-us.tmes.trendmicro.com include:spf.tmes.trendmicro.com include:spf.protection.outlook.com include:_spf.embluemail.com include:spf.os-ns.com include:spf1.masivapp.com include:23666218.spf08.hubspotemail.net -all
- ega53jsd7l41m97pob587s4oq4
- google-site-verification=h4hRo36WXlreBP8kam2vftx5FvyErP8EhW0gQzr0LfU
- MS=ms21371284
- clientconfig.microsoftonline-p.net
- cisco-ci-domain-verification=ba8f9b7567f525cbc96f4ec4d81d8fa5cb98899d29ea00a4e96855e5d19fbc5
- mongodb-site-verification=92Avwawtm4GH5VnTcLhqC168vEYWjqwa
- cisco-ci-domain-verification=21358e18bf236e561a3667db103fbcc5a2058801cf33cb9faf0254ec2ddf049
- MS=ms24526588
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