Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
rtptech.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 21:14:04 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
No priority data.
A / AAAA Records
- 104.21.78.67
- 172.67.217.114
- 2606:4700:3036::6815:4e43
- 2606:4700:3036::ac43:d972
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
mallory.ns.cloudflare.com
brian.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; ruf=mailto:[email protected]; fo=0:1:d:s;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
7 records- MS=ms93000611
- SPFv=spf1 include:us._netblocks.mimecast.com -all
- webexdomainverification.LZYM=7a1a8359-f3e5-4825-9578-fb35c67c9a47
- 0ed1fe018a7d177c6ad71e45e4a968d474f8c59b2a
- 0ed1fe018ab5ab9921aef84f39b7ab9a2429d35366
- MS=ms53164067
- MS=ms92627573
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