Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sz.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 13:49:44 UTC · ↺ Refresh
MX Hostnames
- sz-de.mail.protection.outlook.com
MX Priorities
- sz-de.mail.protection.outlook.com: 50
A / AAAA Records
- 208.82.73.61 ↩ lb-redirect.dns.boreus.de
Mail Server IPs
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.boreus.de hostmaster.boreus.de 2026031800 10800 3600 604800 3600
Primary NS (mname)
ns1.boreus.de
Admin Email (rname)
hostmaster@boreus.de
Serial
2026031800
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns3.boreus.de
ns4.boreus.de
ns1.boreus.de
ns2.boreus.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.swmh.de ip4:194.53.64.2/32 ip4:92.205.160.178 ip4:176.9.47.151 ip4:136.243.60.5 ip4:212.4.227.0/24 ip4:212.4.228.0/24 ip4:194.232.25.0/24 ip4:194.232.31.3 ip4:193.201.168.0/24 ip6:2a01:468:1:1225::/64 ip4:194.232.31.68 ip4:194.158.134.36 ip4:213.198.99.210/31 ip4:213.198.99.216 ip4:81.25.202.82 ip4:185.238.12.20/31 include:spf.apa.at include:spf-0.secureserver.net include:spf.de.umantis.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; adkim=s; aspf=r; rf=afrf; pct=100;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
8 records- SPFv=spf1 mx include:spf.swmh.de ip4:194.53.64.2/32 ip4:92.205.160.178 ip4:176.9.47.151 ip4:136.243.60.5 ip4:212.4.227.0/24 ip4:212.4.228.0/24 ip4:194.232.25.0/24 ip4:194.232.31.3 ip4:193.201.168.0/24 ip6:2a01:468:1:1225::/64 ip4:194.232.31.68 ip4:194.158.134.36 ip4:213.198.99.210/31 ip4:213.198.99.216 ip4:81.25.202.82 ip4:185.238.12.20/31 include:spf.apa.at include:spf-0.secureserver.net include:spf.de.umantis.com -all
- google-site-verification=8KU_v7nVWWPNjrbHCcQJrMq7iTpMyj_4VM8YL--pJ5I
- hd0miJhmj76aReVxaRBtg9F1vAVAGFyQQLW7Y+83AklVyqF3z7Q1ayxA/datAJ7vN7qNNaqHs9QvErzN/5mIPQ==
- adobe-idp-site-verification=29adaf8d3939a68728ebb9b361e3e14660d5020afead69dc3fb2618de579bb25
- google-site-verification=SNPtdBe2sUw0w4KAxe6zt_K7FlT60l-T6G5xkMCkr2s
- atlassian-domain-verification=LmhbOFlPaFZGD6QBkVhcQgaAZnNJpu6TSN/ooZ4Uz4oSRysmViCxBklmtqGxhgtD
- google-site-verification=POpwSO8EDo3T0Bi4FlvGEs7YOiHWj-O8Ax-kZ1nH2h0
- MS=ms20802619
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