Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
institute.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 22:06:48 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-2.mimecast.com
- usb-smtp-inbound-1.mimecast.com
MX Priorities
- usb-smtp-inbound-1.mimecast.com: 10
- usb-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 141.193.213.30 (no PTR)
Mail Server IPs
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns-46.awsdns-05.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-46.awsdns-05.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-2012.awsdns-59.co.uk
ns-46.awsdns-05.com
ns-888.awsdns-47.net
ns-1165.awsdns-17.org
SPF Record
✓ Strict (-all)
v=spf1 include:usb._netblocks.mimecast.com include:servers.mcsv.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
5 records- apple-domain-verification=lKAR6WxAF8KtbCjS
- SPFv=spf1 include:usb._netblocks.mimecast.com include:servers.mcsv.net -all
- 1e2sZnYpAcnV3CCJPn7qcd0t05+eTB15/SywEGdU2FxIj93GXsYyX2mX6dC08vSYzyO9fLwiwXnv8NzYCWY9tg==
- MS=ms21774105
- MS=ms64958968
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