Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rider.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 14:15:03 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
A / AAAA Records
- 23.185.0.1
- 2620:12a:8001::1
- 2620:12a:8000::1
Mail Server IPs
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-x1b.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 142.251.111.26 ↩ bk-in-f26.1e100.net
- 2607:f8b0:4004:c07::1a ↩ bc-in-f26.1e100.net
SOA Record
Raw SOA
aragorn.ns.cloudflare.com dns.cloudflare.com 2399849489 10000 2400 604800 1800
Primary NS (mname)
aragorn.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399849489
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
aragorn.ns.cloudflare.com
rosalie.ns.cloudflare.com
SPF Record
✗ Invalid
v=spf1 include:UniversalSpf.org ~include:x.UniversalSpf.org include:_spf.rider.edu include:_spf.google.com include:_spf.qualtrics.com include:spf.blackboardconnect.com include:_spf.windstreambusiness.net include:spf.elluciancloud.com include:spf.mandrillapp.com include:servers.mcsv.net include:amazonses.com include:sendgrid.net include:mailgun.org ~all
📊 DNS lookups: 13/10
— over limit!
⚠ Too many DNS lookups (13/10) — SPF will fail validation. Reduce include: statements.
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none; rua=mailto:[email protected]; aspf=r; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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
8 records- apple-domain-verification=96TdptkTd5pp6cum
- autodesk-domain-verification=3pUlktNojbUpOUutInog
- google-site-verification=GFB-Ct95zvvM9fe-zcxhu4GZNXMU6kAZ_QuNfe5iZoU
- google-site-verification=ljUnvJLceiDthETJ5NGrb6Dw77FWIpEi9ZG43E-PPkE
- SPFv=spf1 include:UniversalSpf.org ~include:x.UniversalSpf.org include:_spf.rider.edu include:_spf.google.com include:_spf.qualtrics.com include:spf.blackboardconnect.com include:_spf.windstreambusiness.net include:spf.elluciancloud.com include:spf.mandrillapp.com include:servers.mcsv.net include:amazonses.com include:sendgrid.net include:mailgun.org ~all
- MS=C5DD496A337075817D933B68BBC2C2DBFFE714BD
- ZOOM_verify_L5lpnWr8S7aqnvLIwZCg_Q
- adobe-idp-site-verification=117c1af90148a3858051714f9c356d7cb37f82a5fddf920a351927c046cdabcb
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 rider.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits