Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sera-web.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 13:14:25 UTC · ↺ Refresh
MX Hostnames
- mx.sera-web.com
- mx2.sera-web.com
MX Priorities
- mx2.sera-web.com: 20
- mx.sera-web.com: 30
A / AAAA Records
- 92.79.74.59 (no PTR)
Mail Server IPs
- 178.15.215.115 ↩ mx2.sera-web.com
- 178.15.215.114 ↩ mx.sera-web.com
SOA Record
Raw SOA
nsa0.schlundtech.de t\.sauer.sera-web.com 2025110303 43200 7200 1209600 600
Primary NS (mname)
nsa0.schlundtech.de
Admin Email (rname)
t\@sauer.sera-web.com
Serial
2025110303
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
nsd0.schlundtech.de
nsc0.schlundtech.de
nsa0.schlundtech.de
nsb0.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 a mx a:securityeducation.com a:ws02-securityeducation.com include:spf.protection.outlook.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- fpQPCDEzVk2Ex1gfTIY0i8yKggcgnYkb1bYjpGIks9Ed30vhKCTHmnS+o3BJ92PphOqoSUCjeig0BFEnq3R86g==
- SPFv=spf1 a mx a:securityeducation.com a:ws02-securityeducation.com include:spf.protection.outlook.com -all
- have-i-been-pwned-verification=1e84af78adaa3a975d9d390aad2d9223
- brevo-code:45cb8932183a0e7b24f8024cebdeab40
- apple-domain-verification=J4tE1Yx6Yye5M06H
- fyh2dcfkCxzPZsTSE4dz/K7T9dq6n72IuqQIOTlnUl7mWuvcA+fBNBIKjTGJrz3AnZJVjQBCqEk1+1831jj3mA==
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