Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
tcdupage.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-19 07:16:13 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 104.16.159.133 (no PTR)
- 104.16.158.133 (no PTR)
- 104.18.190.233 (no PTR)
- 104.18.189.233 (no PTR)
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns1-04.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-04.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-04.azure-dns.info
ns1-04.azure-dns.com
ns2-04.azure-dns.net
ns3-04.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:209.175.17.252 ip4:12.47.31.50 include:us._netblocks.mimecast.com include:spf.us.exclaimer.net include:_spf.samanage.com include:_spf.google.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
selector1._domainkey
selector2._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
10 records- "MS=E6A0C35174CF5AAA1B9AA215F7A285299870DA5E"
- "MS=ms82487897"
- solarwinds-service0desk-verification=ecda5eb1982a31fd0650b73dabba0746
- g0qo3971i1f7shjds8d1k0m8b2
- apple-domain-verification=rDJBRCgMYAKaQhKx
- openai-domain-verification=dv-8yWo7pI4mj6CezyxBLQo5rc7
- ejsirc0lqd478jaeql1ld567hb
- SPFv=spf1 ip4:209.175.17.252 ip4:12.47.31.50 include:us._netblocks.mimecast.com include:spf.us.exclaimer.net include:_spf.samanage.com include:_spf.google.com -all
- ZOOM_verify_N-KXSVEPSCqJuBBPtnlykw
- "OhKPEE8CG4BRcvZc1WKNdpDm4bpgM0KSB960xA07wxJuGSppgemBgym4M3LifTIdBxOstMyiCw6cRLyzuWaEHQ=="
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