Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fcasd.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 07:38:31 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt2.aspmx.l.google.com
MX Priorities
- alt4.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 5
- alt1.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
A / AAAA Records
- 104.17.67.73
Mail Server IPs
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 142.251.16.27 ↩ bl-in-f27.1e100.net
- 2607:f8b0:4004:c1b::1b ↩ wv-in-f27.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
SOA Record
Raw SOA
ns10.digicertdns.com dns.digicertdns.com 2009010165 43200 3600 1209600 180
Primary NS (mname)
ns10.digicertdns.com
Admin Email (rname)
dns@digicertdns.com
Serial
2009010165
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns10.digicertdns.com
ns11.digicertdns.com
ns12.digicertdns.com
ns15.digicertdns.net
ns14.digicertdns.net
ns13.digicertdns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 +ip4:192.124.34.0/24 +ip4:199.36.164.0/22 +ip4:209.10.115.50 include:_spf.google.com include:customerspf.schoolmessenger.com include:mailgun.org ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=50;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 50% of failing messages only
DKIM Selectors
✓ 1 found
google._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
5 records- schoology-domain-verification=bb41b655b99c47e05b1ba5b5cb0c6c67f6cacece9ad4e9839be256a5463d00c9
- SPFv=spf1 +ip4:192.124.34.0/24 +ip4:199.36.164.0/22 +ip4:209.10.115.50 include:_spf.google.com include:customerspf.schoolmessenger.com include:mailgun.org ~all
- r3rrp4lqmlri3cocue40j7lba1
- google-site-verification=AGZrNkhGdjRuAiSSzyY7URlpg43776ZkWl2fF0GdKfk
- google-site-verification=yOJP6WYUm4w-gAIjZShVYCe2ibt3C65KiKQUCF3De7g
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