Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
formulastudent.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 01:02:49 UTC · ↺ Refresh
MX Hostnames
- mail.fs-m.org
MX Priorities
- mail.fs-m.org: 10
A / AAAA Records
- 136.243.78.240 ↩ main2024.fs-g.org
- 2a01:4f8:212:2ccf::2 ↩ main2024.fs-g.org
Mail Server IPs
- 84.19.184.43 ↩ mail.fs-m.org
SOA Record
Raw SOA
cass.ns.cloudflare.com dns.cloudflare.com 2399908213 10000 2400 604800 1800
Primary NS (mname)
cass.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399908213
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
kai.ns.cloudflare.com
cass.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx a:mailout.fsg.one -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 64 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
7 records- google-site-verification=Tg1bs6f93gG60gt6jv4GI3ZrR91RdIfLqDoKeGfMcpU
- google-site-verification=YW796Oiir4dxjhXA5RPIc4033ZwrLBEdRGAO153jdcs
- google-site-verification=YYaA5KRtXw_U5233_GoDHRpJm42_PA3iXi63czcVf30
- SPFv=spf1 mx a:mailout.fsg.one -all
- MS=ms29059995
- cisco-ci-domain-verification=261906c974672ea2862745c2d1e5d1738f3f5b70618101fc632f849e01759ad0
- facebook-domain-verification=w0jt915i930n862pnbhywozn869sxg
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