Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
muster.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-21 00:59:51 UTC · ↺ Refresh
MX Hostnames
- aspmx2.googlemail.com
- aspmx3.googlemail.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
MX Priorities
No priority data.
A / AAAA Records
- 16.182.73.221
- 52.217.114.45
- 52.216.56.29
- 16.15.223.159
- 16.15.254.76
- 52.217.123.237
- 54.231.129.101
- 16.15.253.153
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns-1009.awsdns-62.net
ns-1135.awsdns-13.org
ns-1740.awsdns-25.co.uk
ns-263.awsdns-32.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:sendgrid.net include:_spf.google.com include:1775319.spf07.hubspotemail.net ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- google-site-verification=hzZUlARKvpXOLjXkP2ay4P9Pbz-EZPJTX9LYVhlIdv8
- twilio-domain-verification=6fe98da8a42bf17630445b5bfd115896
- SPFv=spf1 include:sendgrid.net include:_spf.google.com include:1775319.spf07.hubspotemail.net ~all
- yahoo-verification-key=YvaHBjsNgHQekaE/IceibghJLtGBLK4lnjt5/oumr4I=
- apple-domain-verification=23dd50xKRm5ofSXj
- detectify-verification=c46d50d5aafc94f0754be57352af3222
Full email verification for muster.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits