Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
genbook.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 12:28:57 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt3.aspmx.l.google.com
MX Priorities
- alt4.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt1.aspmx.l.google.com: 5
- alt3.aspmx.l.google.com: 10
A / AAAA Records
- 35.195.188.137
Mail Server IPs
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 142.251.163.26 ↩ wv-in-f26.1e100.net
- 2607:f8b0:4004:c09::1b ↩ bh-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
SOA Record
Raw SOA
ns-cloud-e1.googledomains.com cloud-dns-hostmaster.google.com 1 21600 3600 259200 300
Primary NS (mname)
ns-cloud-e1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
1
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s
Nameservers (NS)
ns-cloud-e4.googledomains.com
ns-cloud-e1.googledomains.com
ns-cloud-e2.googledomains.com
ns-cloud-e3.googledomains.com
SPF Record
✓ Strict (-all)
v=spf1 a mx a:zgateway.zuora.com include:_spf.google.com include:sendgrid.net include:mail.zendesk.com include:spf.autopilothq.com ip4:64.79.155.192 ip4:146.148.35.36 ip4:35.223.142.186 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;sp=quarantine;adkim=r;aspf=r;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- SPFv=spf1 a mx a:zgateway.zuora.com include:_spf.google.com include:sendgrid.net include:mail.zendesk.com include:spf.autopilothq.com ip4:64.79.155.192 ip4:146.148.35.36 ip4:35.223.142.186 -all
- google-site-verification=m2s0_3BHxJ8WXpzfoHhDMD9RyOGse78t1ovx0UWMRXg
- google-site-verification=UoTkhUVBo3IKjMSiiMfvU7Sl_2_C3Ee2Q8cO1kbVu4k
- google-site-verification=Sqrddb7BrWQtsJS8TBybLLad3AvGyEkY8mijLJ3JERU
- amazonses:4oqU+xMvnKrU7hloKSjmNn6KCsXRe+j/Sv4S9OdWwLU=
- google-site-verification=8TZXG-WAUTIwk9DIWy9f8EKV0z0tmYqioo-cvnKqWq8
- spf2.0/pra ?all
- google-site-verification=nQW4YizeuX2tbJFbhpBapmbP1jf-Yr_Uy0jf1eKD5Gs
- facebook-domain-verification=78599j0t8n0f550yghx78swrrw5zpm
- google-site-verification=uGqON7-7DW-TKs8cuXhCkf3VBKQUCRzKPcYhgxyfsC4
Full email verification for genbook.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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