portenntum.com

Valid Email Server
Domain Lookup › portenntum.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
portenntum.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 06:56:05 UTC · ↺ Refresh

MX Hostnames

  • mx-01-us-west-2.prod.hydra.sophos.com
  • mx-02-us-west-2.prod.hydra.sophos.com

MX Priorities

  • mx-02-us-west-2.prod.hydra.sophos.com: 10
  • mx-01-us-west-2.prod.hydra.sophos.com: 10

A / AAAA Records

  • 148.244.118.148 ↩ static-148-244-118-148.alestra.net.mx

Mail Server IPs

  • 50.112.72.129 ↩ ec2-50-112-72-129.us-west-2.compute.amazonaws.com
  • 44.234.222.180 ↩ ec2-44-234-222-180.us-west-2.compute.amazonaws.com
  • 34.215.37.215 ↩ ec2-34-215-37-215.us-west-2.compute.amazonaws.com

SOA Record

Raw SOA dns22 hostmaster.shadai.portenntum.com 234 900 600 86400 3600
Primary NS (mname)
dns22
Admin Email (rname)
hostmaster@shadai.portenntum.com
Serial
234
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s

Nameservers (NS)

dns22

SPF Record

✓ Strict (-all)
v=spf1 mx a include:_spf_uswest2.prod.hydra.sophos.com include:spf.protection.outlook.com include:spf.constantcontact.com ip4:148.244.118.153 ip4:148.244.118.146 ip4:189.207.239.180 -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • sophos-domain-verification=dae598711f6c0143f489ea680e1522e9f4f7d3ea
  • SPFv=spf1 mx a include:_spf_uswest2.prod.hydra.sophos.com include:spf.protection.outlook.com include:spf.constantcontact.com ip4:148.244.118.153 ip4:148.244.118.146 ip4:189.207.239.180 -all
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