Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fcerta.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 16:42:03 UTC · ↺ Refresh
MX Hostnames
- email.fcerta.com.br
MX Priorities
- email.fcerta.com.br: 10
A / AAAA Records
- 172.67.159.149 (no PTR)
- 104.21.66.114 (no PTR)
- 2606:4700:3036::ac43:9f95 (no PTR)
- 2606:4700:3033::6815:4272 (no PTR)
Mail Server IPs
- 66.94.107.198 ↩ server.umbu.app
- 2605:a142:2085:3897::1 ↩ server.umbu.app
SOA Record
Raw SOA
curt.ns.cloudflare.com dns.cloudflare.com 2399310169 10000 2400 604800 1800
Primary NS (mname)
curt.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399310169
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jade.ns.cloudflare.com
curt.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:66.94.107.198 ip6:2605:a142:2085:3897:0000:0000:0000:0001 a:server.umbu.app include:_spf.google.com include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected],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],mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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 a mx ip4:66.94.107.198 ip6:2605:a142:2085:3897:0000:0000:0000:0001 a:server.umbu.app include:_spf.google.com include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com ~all
- MS=3CB8B2BB85123FA2A901F2DF781A077326423CC1
- google-site-verification=BQUzUotTPNtm26xz-nGVd0jb7t3DQIDjfK7GDo1O6v4
- google-site-verification=IDzZ3btEaLZirrTbr8ezogOWY-HNwQ7evOoxTqpPKn8
Full email verification for fcerta.com.br
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