Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
atslab.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 03:01:28 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: 10
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns1-07.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-07.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns1-07.azure-dns.com
ns2-07.azure-dns.net
ns3-07.azure-dns.org
ns4-07.azure-dns.info
SPF Record
✓ Strict (-all)
v=spf1 ip4:12.45.79.2 include:_netblocks.mimecast.com include:spf.protection.outlook.com include:marketing.dynamics.com -all
📊 DNS lookups: 3/10
✓ 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
✓ 4 found
selector1._domainkey
selector2._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
9 records- d365mktkey=6avjzuk3elt8ztc6hrh0sawl4
- d365mktkey=TFoXrdx8tBx0tBZOHQAfQccI2fqVUT5MlxTBPZCoGFcx
- 1password-site-verification=LRE6K4QHI5GATPA57UOGDBTUIM
- MS=ms32994416
- SPFv=spf1 ip4:12.45.79.2 include:_netblocks.mimecast.com include:spf.protection.outlook.com include:marketing.dynamics.com -all
- _globalsign-domain-verification=og4kG0Ibs3hWQCMTLaOln1MSsGrQXFB-al1OpmrUd0
- zKPBrQWh6eLlHug2Kagfl43djv4O21FXI8jgdvrO6uWrSWKvlufs5YpqJ/6lzCuUVkIop446dlCZ93cCbCfJBA==
- google-site-verification=XcdEj6DyVLur7j4wgOyIJVKpQRKjKm33rDuTBJ-BT-I
- apple-domain-verification=vRbTh1AfyUa5hNn1
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 atslab.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits