Domain Overview
DNS: ✓ 9h ago
Checker: ✓ 9h ago
a20.net
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-20 13:55:15 UTC · ↺ Refresh
MX Hostnames
- brucester.a20.net
- brucester.a20.net
MX Priorities
- brucester.a20.net: 30
- brucester.a20.net: 10
A / AAAA Records
- 87.233.224.104 ↩ brucester.a20.net
Mail Server IPs
- 87.233.224.104 ↩ brucester.a20.net
SOA Record
Raw SOA
dns01.a20.net dnsmail.a20.net 2025120501 28800 7200 1209600 86400
Primary NS (mname)
dns01.a20.net
Admin Email (rname)
dnsmail@a20.net
Serial
2025120501
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
dns02.a20.net
dns01.a20.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:87.233.224.104 a:brucester.a20.net -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; fo=1; rua=mailto:[email protected]; ruf=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
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- SPFv=spf1 ip4:87.233.224.104 a:brucester.a20.net -all
- google-site-verification=j0MiNGr4X37aEtkHUCkrVvXOpnz1p-qhXyEOPz5DPYk
- yahoo-verification-key=Pf48lnz/qOZ8a8WFdOaZg4wyzw8/ONG/mLjn5EFbMJo=
- potter-domain-verification=697651376e612a16
Full email verification for a20.net
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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