Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kolter.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 22:11:19 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 0
- us-smtp-inbound-1.mimecast.com: 0
A / AAAA Records
- 192.124.249.106 ↩ cloudproxy10106.sucuri.net
Mail Server IPs
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns09.domaincontrol.com dns.jomax.net 2025101300 28800 7200 604800 600
Primary NS (mname)
ns09.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025101300
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns09.domaincontrol.com
ns10.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:67.216.225.18 ip4:64.31.50.202 ip4:206.222.20.133 include:us._netblocks.mimecast.com include:_spf.mailgun.org include:mail.zendesk.com include:servers.mcsv.net include:spf.buildercms.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- google-site-verification=IrhNu79zRsNaaiyvErk7H-hDGbGZihlGwIRfDYF6cNY
- SPFv=spf1 mx a ip4:67.216.225.18 ip4:64.31.50.202 ip4:206.222.20.133 include:us._netblocks.mimecast.com include:_spf.mailgun.org include:mail.zendesk.com include:servers.mcsv.net include:spf.buildercms.com -all
- google-site-verification=JezTUcxB-alSbeEF5X6ENGXJBCqn6eJGZFpDLAKr-rU
- apple-domain-verification=A8fT6XRKGGKOztLk
- MS=165C3141E83207F8B15C2E7F1314AF6C12E37E5B
- smartsheet-site-validation=ZZonIAbE8RReonA4ekVN3GC6nfJD82RY
Full email verification for kolter.com
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