Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
byte5.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 18:48:25 UTC · ↺ Refresh
MX Hostnames
- byte5-de.mail.protection.outlook.com
MX Priorities
- byte5-de.mail.protection.outlook.com: 1
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
a.ns14.net info.byte5.de 2025072100 43200 7200 1209600 86400
Primary NS (mname)
a.ns14.net
Admin Email (rname)
info@byte5.de
Serial
2025072100
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
a.ns14.net
d.ns14.net
c.ns14.net
b.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mailjet.com include:spf.protection.outlook.com include:spf.sendinblue.com include:spf.emailsignatures365.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict 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
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._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
9 records- SPFv=spf1 include:spf.mailjet.com include:spf.protection.outlook.com include:spf.sendinblue.com include:spf.emailsignatures365.com include:spf-de.emailsignatures365.com -all
- google-site-verification=F3BAl5MN_sXX5QZPwIp-RxkObfaE1BMoKkOlVIoME5w
- sendinblue-code:036a600a781bf6d0845917bf49838a49
- brevo-code:8427f3e4bb18fae5e20a8943d8ef7122
- apple-domain-verification=74efUVSf78sXIttwezRKKJPJU9PxplUtFFu9MdJMfsU
- dropbox-domain-verification=llc2eybhq6p6
- byte5.azurewebsites.net
- atlassian-domain-verification=txCMT6PEcw5nLPD5lyps1V86PiVMhknUCUxz8ypITY7vzBf7a1ZUyfWkgDYVu2My
- citrix-verification-code=5a5e6e18-35f3-4183-9ee7-c8c52ff3192a
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