Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rctc.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 19:05:00 UTC · ↺ Refresh
MX Hostnames
- rctc-edu.mail.protection.outlook.com
MX Priorities
- rctc-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 104.26.12.183 (no PTR)
- 172.67.73.16 (no PTR)
- 104.26.13.183
- 2606:4700:20::681a:db7
- 2606:4700:20::ac43:4910
- 2606:4700:20::681a:cb7
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
karl.ns.cloudflare.com dns.cloudflare.com 2398810613 10000 2400 604800 1800
Primary NS (mname)
karl.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398810613
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
karl.ns.cloudflare.com
zelda.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.minnstate.edu include:a._spf.brightspace.com include:_spf-eus.teamdynamix.com ip4:134.29.114.163 include:s2.spf.rctc.edu include:s3.spf.rctc.edu -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
9 records- adobe-idp-site-verification=ace83641a9387357b1bbe15f6dceaede8733702004d4657aeb9ab72d351a1c18
- adobe-idp-site-verification=cc1a5308-6f73-4063-bae5-dc3221416df0
- apple-domain-verification=nyGARrnjsx0DCjNm
- docusign=dd32ccb2-449c-44d4-98d2-4c54de65593f
- facebook-domain-verification=0yro2pstrowxy5kyfxnrqpwmo7wk9h
- o5md4q838q4o5niduufj4pp62n
- SPFv=spf1 include:spf.protection.outlook.com include:spf.minnstate.edu include:a._spf.brightspace.com include:_spf-eus.teamdynamix.com ip4:134.29.114.163 include:s2.spf.rctc.edu include:s3.spf.rctc.edu -all
- MS=ms39519944
- TP46MI91DHV9IBLDU8OQR32SVD
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