Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
conn-selmer.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 00:28:25 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-1.mimecast.com: 10
- usb-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 172.67.148.194 (no PTR)
- 104.21.11.103 (no PTR)
- 2606:4700:3031::ac43:94c2 (no PTR)
- 2606:4700:3033::6815:b67 (no PTR)
Mail Server IPs
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
jerry.ns.cloudflare.com dns.cloudflare.com 2397561874 10000 2400 604800 1800
Primary NS (mname)
jerry.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397561874
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
nora.ns.cloudflare.com
jerry.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:50.220.165.234/32 ip4:50.227.79.214/32 ip4:50.171.115.125/32 ip4:50.171.115.122/32 include:usb._netblocks.mimecast.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected];
✓ 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
1 record- SPFv=spf1 ip4:50.220.165.234/32 ip4:50.227.79.214/32 ip4:50.171.115.125/32 ip4:50.171.115.122/32 include:usb._netblocks.mimecast.com ~all
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