Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
pfeiffer-may.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 18:53:07 UTC · ↺ Refresh
MX Hostnames
- pfeiffermay-de02b.g-v1.mx.microsoft
MX Priorities
- pfeiffermay-de02b.g-v1.mx.microsoft: 10
A / AAAA Records
- 3.72.11.170 ↩ ec2-3-72-11-170.eu-central-1.compute.amazonaws.com
Mail Server IPs
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
SOA Record
Raw SOA
shades09.rzone.de hostmaster.strato-rz.de 2020052161 86400 7200 604800 300
Primary NS (mname)
shades09.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020052161
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks02.rzone.de
shades09.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 a mx a:mail.pum.de IP4:80.149.33.91 include:spf.go-2b-planer.de include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 6/10
✓ 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
✓ 2 found
selector1._domainkey
selector2._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
4 records- google-site-verification=g_pVkuojdpThQ_v6OPHLddGMWfn-7fHIT6eXxUInOy8
- SPFv=spf1 a mx a:mail.pum.de IP4:80.149.33.91 include:spf.go-2b-planer.de include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
- apple-domain-verification=1jAB-B54RlkBR55b0lWbXfvMgvYNgH5CbhNVIweqpnw
- MS=ms39384056
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