Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
simplybook.me
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:29:53 UTC · ↺ Refresh
MX Hostnames
- ASPMX3.GOOGLEMAIL.COM
- ASPMX.L.GOOGLE.COM
- ALT1.ASPMX.L.GOOGLE.COM
- ASPMX2.GOOGLEMAIL.COM
- ASPMX4.GOOGLEMAIL.COM
- ALT2.ASPMX.L.GOOGLE.COM
- ASPMX5.GOOGLEMAIL.COM
MX Priorities
- aspmx2.googlemail.com: 30
- aspmx5.googlemail.com: 30
- aspmx4.googlemail.com: 30
- alt2.aspmx.l.google.com: 20
- alt1.aspmx.l.google.com: 20
- aspmx.l.google.com: 10
- aspmx3.googlemail.com: 30
A / AAAA Records
- 148.113.208.213 ↩ ns5033134.ip-148-113-208.net
Mail Server IPs
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
SOA Record
Raw SOA
ns1.linode.com mikhail\.b.gmail.com 2021000081 14400 14400 1209600 86400
Primary NS (mname)
ns1.linode.com
Admin Email (rname)
mikhail\@b.gmail.com
Serial
2021000081
Refresh
14400s
Retry
14400s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns3.linode.com
ns5.linode.com
ns2.linode.com
ns4.linode.com
ns1.linode.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:109.74.204.32 ip4:153.92.254.133 ip4:172.105.4.156 ip4:143.42.109.183 ip6:2a01:7e00::f03c:91ff:feae:c632 ip6:2600:3c04::f03c:92ff:fe4f:9f0 ip6:2a01:7e00::f03c:93ff:fe45:d0cf include:_spf.google.com include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=none; aspf=r; adkim=r; pct=100; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
mail._domainkey
s1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- _globalsign-domain-verification=qQvhL_KTSIcgWJi9LS4lanzx7gm1Geq5xeoficPyta
- hubspot-3g4k3VgbCmH4
- amazonses:9PwArEczAIknlc1JasRZxGIBSd6jFfl82GGVvh//2kA=
- _globalsign-domain-verification=hsngFGEkJ28cP3328G0NcaWT5K-dtI2FCC4L1SrApD
- Sendinblue-code:d47a0b9e6f584de09e68294e31f655fc
- google-site-verification=AxcOVP8866dv7Bm8x4vI4oH4AecXlrLfUVcY7xeRklg
- knowbe4-site-verification=388f92ad50c26686bccd3d3e98779d19
- google-site-verification=qGn8ygh4LzgY4zNZFuF_xnRo7PiS8YW_mXU9nPgqt60
- SPFv=spf1 ip4:109.74.204.32 ip4:153.92.254.133 ip4:172.105.4.156 ip4:143.42.109.183 ip6:2a01:7e00::f03c:91ff:feae:c632 ip6:2600:3c04::f03c:92ff:fe4f:9f0 ip6:2a01:7e00::f03c:93ff:fe45:d0cf include:_spf.google.com include:_spf.psm.knowbe4.com -all
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