Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
careersourcepolk.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 04:16:48 UTC · ↺ Refresh
MX Hostnames
- careersourcepolk-com.mail.protection.outlook.com
MX Priorities
- careersourcepolk-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.21 (no PTR)
- 141.193.213.20 (no PTR)
Mail Server IPs
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
brenda.ns.cloudflare.com dns.cloudflare.com 2397541580 10000 2400 604800 1800
Primary NS (mname)
brenda.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397541580
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
brenda.ns.cloudflare.com
joel.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:96.254.170.71/32 ip4:96.254.170.80/32 ip4:71.40.181.130/27 ip4:107.144.158.122/32 ip4:149.72.132.107 include:spf.protection.outlook.com include:mailgun.org include:sendgrid.net include:notifications.issuetrak.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
4 records- 3tyxs6f1WCpxxCV8jSuoXd6stbp52P7ElMRv5HmcXK0nw67+YkoCfn5kqikddPIB4c2fA6UIIS5rlQe2HhWeCg==
- MS=ms34709521
- facebook-domain-verification=j4jem2irogaxboth68bxeu709jwcs7
- SPFv=spf1 ip4:96.254.170.71/32 ip4:96.254.170.80/32 ip4:71.40.181.130/27 ip4:107.144.158.122/32 ip4:149.72.132.107 include:spf.protection.outlook.com include:mailgun.org include:sendgrid.net include:notifications.issuetrak.com -all
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 careersourcepolk.com
SMTP handshake, catch-all detection, SPF/DKIM/DMARC analysis, and Yahoo/Outlook verification.
Get 1,000 Free Credits