Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
guelph.ca
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 10:57:40 UTC · ↺ Refresh
MX Hostnames
- ca-smtp-inbound-2.mimecast.com
- ca-smtp-inbound-1.mimecast.com
MX Priorities
- ca-smtp-inbound-2.mimecast.com: 10
- ca-smtp-inbound-1.mimecast.com: 0
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 170.10.146.242 ↩ ca-smtp-delivery-2.mimecast.com
- 170.10.144.242 ↩ ca-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
josh.ns.cloudflare.com dns.cloudflare.com 2398197139 10000 2400 604800 1800
Primary NS (mname)
josh.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398197139
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
josh.ns.cloudflare.com
kinsley.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx:guelph.ca include:ca._netblocks.mimecast.com include:spf.protection.outlook.com include:_spf.esolutionsgroup.ca include:spf.envoke.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; ruf=mailto:[email protected]; 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
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
7 records- autodesk-domain-verification=hXhravHu-PYKxgRz_1jS
- cisco-ci-domain-verification=564e521d0297e2e10277b1cf13fe9e2e1e5f29dc32400be7df57abe9bb41039f
- docusign=240b2a6a-559d-4e29-9025-b00534b0314a
- status-page-domain-verification=hfy52tmvs7fj
- SPFv=spf1 mx:guelph.ca include:ca._netblocks.mimecast.com include:spf.protection.outlook.com include:_spf.esolutionsgroup.ca include:spf.envoke.com -all
- 0ed1fe018a135612a79883434298c1fca010c23f74
- XWu8aPJxkY1Fn/lLRpip6ITMtkJ50Pf+T0VDSh/USeyRXmEZJ2qLhFKUmZneweswsbCofy2W8yxjAepktePQjQ==
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