Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
posco.co.kr
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 02:08:58 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-1053.awsdns-03.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1053.awsdns-03.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-492.awsdns-61.com
ns-536.awsdns-03.net
ns-1053.awsdns-03.org
ns-2036.awsdns-62.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:1.209.183.71 include:_antispf1.posco.co.kr include:_antispf2.posco.co.kr ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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
✓ 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
4 records- SPFv=spf1 ip4:1.209.183.71 include:_antispf1.posco.co.kr include:_antispf2.posco.co.kr ~all
- _3lbgwxg3bbxp3r4xzs9itvjtkcbt1sx
- _p819ftfb03td64dqjjc8gm7x1d4h4q8
- adobe-idp-site-verification=fe2586549d91706ec4c810c04dde1659143a5bed77b97da62451c50ffb79508b
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