Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
schaefer-sis.de
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 06:25:42 UTC · ↺ Refresh
MX Hostnames
- mxa-00903e01.gslb.pphosted.com
- mxb-00903e01.gslb.pphosted.com
MX Priorities
- mxb-00903e01.gslb.pphosted.com: 20
- mxa-00903e01.gslb.pphosted.com: 10
A / AAAA Records
- 185.88.212.213 ↩ srv-a-io.c-856.maxcluster.net
Mail Server IPs
- 66.159.232.165 ↩ mx07-00903e01.pphosted.com
- 66.159.234.172 ↩ mx08-00903e01.pphosted.com
SOA Record
Raw SOA
ns15.domaincontrol.com dns.jomax.net 2026020201 28800 7200 604800 600
Primary NS (mname)
ns15.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026020201
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns16.domaincontrol.com
ns15.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:195.145.21.69 ip4:195.145.21.68 ip4:87.140.109.19 include:spf-00903e01.pphosted.com include:_spf.itandtel.at include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:cepra.de -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a mx ip4:195.145.21.69 ip4:195.145.21.68 ip4:87.140.109.19 include:spf-00903e01.pphosted.com include:_spf.itandtel.at include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:cepra.de -all
- MS=45A9EF7445114D7C6556BF09A0D84256A316170A
Full email verification for schaefer-sis.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits