Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
posco.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 04:45:44 UTC · ↺ Refresh
MX Hostnames
- antispam.posco.net
MX Priorities
- antispam.posco.net: 10
A / AAAA Records
- 1.209.183.128 (no PTR)
Mail Server IPs
- 116.123.216.77 ↩ antispam.posco.net
SOA Record
Raw SOA
ns-1930.awsdns-49.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1930.awsdns-49.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-569.awsdns-07.net
ns-1528.awsdns-63.org
ns-1930.awsdns-49.co.uk
ns-386.awsdns-48.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:1.209.183.71 include:email.ncloud.com include:_antispf1.posco.com include:_antispf2.posco.com include:spf.protection.outlook.com include:_spf.salesforce.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
selector1._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
9 records- mailer.domain.verification=1WOHJFi7P4BTLitB0z0olz1BnwkN4n
- SPFv=spf1 ip4:1.209.183.71 include:email.ncloud.com include:_antispf1.posco.com include:_antispf2.posco.com include:spf.protection.outlook.com include:_spf.salesforce.com ~all
- 41fu22bama865r4ah1vsdsra8a
- Dynatrace-site-verification=cc903706-f10f-4bc1-8dd6-9817b5dab811__obg9j7je1aj3fmkasqfbf4s12v
- MS=ms27949677
- _a6mp8ivts6qql4l4oa7d8rgq7rdchrl
- _m4zlhvoco1tkqc3zjut6xvg1c4fx9w5
- adobe-idp-site-verification=fe2586549d91706ec4c810c04dde1659143a5bed77b97da62451c50ffb79508b
- figma-domain-verification=c8a17214a68d76beb9e21c96f5148b570a00f16430f8d39bcb26c0c671576749-1728524488
Full email verification for posco.com
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