Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sierraneurosurgery.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 16:14:53 UTC · ↺ Refresh
MX Hostnames
- d235004a.ess.barracudanetworks.com
- sierraneurosurgery-com.mail.protection.outlook.com
- d235004b.ess.barracudanetworks.com
MX Priorities
- d235004a.ess.barracudanetworks.com: 8
- sierraneurosurgery-com.mail.protection.outlook.com: 10
- d235004b.ess.barracudanetworks.com: 9
A / AAAA Records
- 74.208.236.187
- 2607:f1c0:100f:f000::232
Mail Server IPs
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.9.11 ↩ mail-bl2pr04cu00103.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::7
SOA Record
Raw SOA
ns1045.ui-dns.com hostmaster.1und1.com 2017060129 28800 7200 604800 600
Primary NS (mname)
ns1045.ui-dns.com
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060129
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1045.ui-dns.com
ns1045.ui-dns.org
ns1045.ui-dns.biz
ns1045.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:71.92.169.90 ip4:64.235.144.0/20 ip4:209.222.80.0/21 mx include:mout.perfora.net include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._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
10 records- brevo-code:8d95c603ffd4bdb41024aa495a8e7c09
- zone-ownership-verification-2c5d6dec193f942d0116497c83014700ab13196d05b6e84d7786da6f847ee09c
- 78686375c6ac8b09f087447630693d97
- 8je02uu9r4kkofj4ubmkj218c6
- viqbvcgef28ahoirl3ttr7aoc1
- 88hu6bgin7jgj3b5hgv5miq4v6
- apple-domain-verification=uDKMZk6hJy4vwdwo
- SPFv=spf1 ip4:71.92.169.90 ip4:64.235.144.0/20 ip4:209.222.80.0/21 mx include:mout.perfora.net include:spf.protection.outlook.com -all
- MS=A7C0379DD72558855510D5D115B5D0748EEB4BAA
- MS=ms37809103
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