Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
landmarkhealth.org
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 02:23:24 UTC · ↺ Refresh
MX Hostnames
- mxa-0077b904.gslb.pphosted.com
- mxb-0077b904.gslb.pphosted.com
MX Priorities
- mxa-0077b904.gslb.pphosted.com: 5
- mxb-0077b904.gslb.pphosted.com: 5
A / AAAA Records
- 149.111.148.141 ↩ prohc-elr.optum.com
Mail Server IPs
- 148.163.150.77 ↩ mx0a-0077b904.pphosted.com
SOA Record
Raw SOA
dns1.cscdns.net hostmaster.cscdns.net 2023122035 28800 7200 604800 300
Primary NS (mname)
dns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2023122035
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
dns1.cscdns.net
dns2.cscdns.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:207.166.95.11 ip4:35.80.141.6 ip4:44.229.141.55 ip4:208.185.229.41 ip4:208.185.229.42 ip4:208.185.229.43 ip4:208.185.229.44 ip4:208.185.229.45 include:spf.protection.outlook.com include:_spfae.corpmailsvcs.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
18 records- knowbe4-site-verification=a3a464993337b797df9e97d0730c407b
- h7mx2lys9xfb5vj144nq4dv28gbtb6qv
- logmein-verification-code=4b98c3a4-46d0-44b0-998c-950fc67212ce
- onx=4e0985e0-651f-4d01-94c9-6f31dbfa320e
- 0rltz7sd4df3r8gqhg33zvjkg3g6kysj
- SPFv=spf1 ip4:207.166.95.11 ip4:35.80.141.6 ip4:44.229.141.55 ip4:208.185.229.41 ip4:208.185.229.42 ip4:208.185.229.43 ip4:208.185.229.44 ip4:208.185.229.45 include:spf.protection.outlook.com include:_spfae.corpmailsvcs.com -all
- lkg2pdrpgqc2vrh4zrqxyh23rbhk3qfb
- smartsheet-site-validation=C0j4jUdoFNz7YXytzOaclqpYRJOjTFEd
- MS=ms79633025
- Dynatrace-site-verification=bbbaf28a-bf02-4aab-958e-0dca2caa8119__g8ahnr6u2t3afg68bqmj5qke7
- 978fd5zhv9403qjfkcwrl0cqmx6cp76r
- 9dzcggy0bf7jjs4tb8sr7247j8gf2bv9
- Dynatrace-site-verification=57488abe-3411-47e2-96f6-c6e5aa7f07b4__6g06852epcqgkp4gfs4cuj19ld
- apple-domain-verification=akJtFw9vh2BdqD1h
- 5m4sn6jfvn512klrcv7cvljx3t2f3h0l
- k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCu6EYXwUx+Mb9lnSpwZi6kh2PAUxaMi6aFtxqt6HB6X5jqEDytuarLfRUEBofj0vEco8EfZ0HjFof5lTzrT9GE68Qy4fvX6VxsEQiYeietTneayuNjQwbTItrIkM0+bDGYwt9707a9Mxnp4a1BYld4UDCm0UZEQJ7IxmStZMADGwIDAQAB
- my27grpztt77yq78hfzlm2bb3jhhpf0z
- hy0s65qq7k8rjbnx0rhc578vp0xmn34h
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for landmarkhealth.org
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits