Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
swfr.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 03:18:20 UTC · ↺ Refresh
MX Hostnames
- swfr-de.mail.protection.outlook.com
MX Priorities
- swfr-de.mail.protection.outlook.com: 10
A / AAAA Records
- 132.230.179.196 ↩ mail.studentenwerk.uni-freiburg.de
Mail Server IPs
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1019.ui-dns.de hostmaster.1und1.de 2016110532 28800 7200 604800 300
Primary NS (mname)
ns1019.ui-dns.de
Admin Email (rname)
hostmaster@1und1.de
Serial
2016110532
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1019.ui-dns.de
ns1019.ui-dns.com
ns1019.ui-dns.org
ns1019.ui-dns.biz
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:132.230.2.212 ip4:132.230.2.211 ip4:87.128.17.246 include:spf.qb-feedback.com include:spf.crsend.com include:spf.mxg.cloud include:spf.protection.outlook.com include:spf.sosafe.de include:spf.brevo.com mx -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected],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
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ Public key: 392 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
3 records- SPFv=spf1 a mx ip4:132.230.2.212 ip4:132.230.2.211 ip4:87.128.17.246 include:spf.qb-feedback.com include:spf.crsend.com include:spf.mxg.cloud include:spf.protection.outlook.com include:spf.sosafe.de include:spf.brevo.com mx -all
- brevo-code:a48a441937786412d98d63875df04b0f
- google-site-verification=1SaBQkuTB8SLVoNN1bcfb2ksOdo7UAuxztoMdvea5yo
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