Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
collegeofsanmateo.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-06 13:21:53 UTC · ↺ Refresh
MX Hostnames
- smcsmtp1.smccd.edu
- smcsmtp2.smccd.edu
MX Priorities
- smcsmtp2.smccd.edu: 10
- smcsmtp1.smccd.edu: 10
A / AAAA Records
- 207.62.235.50 ↩ www.collegeofsanmateo.edu
Mail Server IPs
- 207.62.235.235 ↩ mx2.smccd.edu
- 207.62.235.234 ↩ mx1.smccd.edu
SOA Record
Raw SOA
dns-do.smccd.net please_set_email.absolutely.nowhere 2022081229 10800 3600 2419200 900
Primary NS (mname)
dns-do.smccd.net
Admin Email (rname)
please_set_email@absolutely.nowhere
Serial
2022081229
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
dns-sky.smccd.net
dns-do.smccd.net
SPF Record
✗ Invalid
v=spf1 -all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- 8eactc4n1pgu2t1oa31dkgn704
- SPFv=spf1 -all
- nneosb5idtqbtq7i7et5f3n5m
- 4da2qnf9dphmu0kl84rn3baqgs
- (google-site-verification=g7l2Esj1l8sAbzbCte5tVtcvDAKqRrslsVktC9TAlQw)
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