Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sesu.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 07:38:44 UTC · ↺ Refresh
MX Hostnames
- mxtls.sesu.de
MX Priorities
- mxtls.sesu.de: 0
A / AAAA Records
- 217.160.0.246 ↩ 217-160-0-246.elastic-ssl.ui-r.com
Mail Server IPs
- 62.72.79.102 ↩ mxtls.sesu.de
SOA Record
Raw SOA
ns1079.ui-dns.biz hostmaster.1und1.de 2017072602 28800 7200 604800 300
Primary NS (mname)
ns1079.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.de
Serial
2017072602
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1079.ui-dns.de
ns1079.ui-dns.biz
ns1079.ui-dns.org
ns1079.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 a mx mx:mxtls.sesu.de mx:protection.outlook.com include:_spf-eu.ionos.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ 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
✓ 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
3 records- SPFv=spf1 a mx mx:mxtls.sesu.de mx:protection.outlook.com include:_spf-eu.ionos.com include:spf.protection.outlook.com -all
- swisssign-check=hhu2DSZPk0Ke0opX2mRlk29obAQ
- MS=ms10545624
Full email verification for sesu.de
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