Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tremcoinc.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 04:11:43 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 5
A / AAAA Records
- 40.84.20.250 (no PTR)
Mail Server IPs
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns-1609.awsdns-09.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1609.awsdns-09.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1609.awsdns-09.co.uk
ns-390.awsdns-48.com
ns-914.awsdns-50.net
ns-1368.awsdns-43.org
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a:mgate1.tremcoinc.com ip4:12.43.214.254 ip4:12.43.214.3 ip4:8.28.3.0/24 include:4379519.spf08.hubspotemail.net ip4:216.27.84.64 include:_spf.salesforce.com include:us._netblocks.mimecast.com ip4:20.110.128.212 ip4:216.27.93.0/25 ip4:216.27.84.64 ip4:40.68.254.197 ip4:64.238.211.94 ip4:20.110.128.212 ip4:148.163.129.50 ip4:148.163.129.51 include:mail.zendesk.com ip4:40.68.254.197 include:spf.eu.exclaimer.net ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
default._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
14 records- apple-domain-verification=CTDbWgfn3sqC2I83
- _7wzwtwmynsdqm0aj0axkv1spg8d3w4d
- teamviewer-sso-verification=de523ab9ce1742cba950195dc4218cfb
- ppfb9n5c213587qskqcsswp7vcj7912s
- MS=ms59734045
- Yecc09aIos7uWYoZk+nsOO4HivNY9oBQRZYBpcF0LNCaU/p47AAvdNvNCLzOjSPTb0Xg9FATcKs6EmmakPxBdw==
- t5gh2393f92tdhu3pv8bu1bets
- SPFv=spf1 mx a:mgate1.tremcoinc.com ip4:12.43.214.254 ip4:12.43.214.3 ip4:8.28.3.0/24 include:4379519.spf08.hubspotemail.net ip4:216.27.84.64 include:_spf.salesforce.com include:us._netblocks.mimecast.com ip4:20.110.128.212 ip4:216.27.93.0/25 ip4:216.27.84.64 ip4:40.68.254.197 ip4:64.238.211.94 ip4:20.110.128.212 ip4:148.163.129.50 ip4:148.163.129.51 include:mail.zendesk.com ip4:40.68.254.197 include:spf.eu.exclaimer.net ~all
- smartsheet-site-validation=t8uXTsue4Zs4Gm6VcRRACzePFetb3NOS
- canva-site-verification=gHhN2KrxSL9iQIpgffmxqw
- q+3i7TmKHVJDnI2+q4NHJ76qoAUcbUeCOzmZr+0mXvo=
- 4748406CA11D764513B3A046FCEED15C2750D0789D54A43BBC85181C9AA89163
- bglx6dgnjs269qfytt2chq7j56gf2q72
- knowbe4-site-verification=8ef4ead76264cbf6c0f64a2c733d60a0
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for tremcoinc.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits