Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fastaff.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 19:36:58 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 0
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 18.67.76.12 ↩ server-18-67-76-12.iad89.r.cloudfront.net
- 18.67.76.84 ↩ server-18-67-76-84.iad89.r.cloudfront.net
- 18.67.76.95 ↩ server-18-67-76-95.iad89.r.cloudfront.net
- 18.67.76.11 ↩ server-18-67-76-11.iad89.r.cloudfront.net
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns20.digicertdns.com dns.digicertdns.com 2009011172 43200 3600 1209600 180
Primary NS (mname)
ns20.digicertdns.com
Admin Email (rname)
dns@digicertdns.com
Serial
2009011172
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns14.dnsmadeeasy.com
ns15.dnsmadeeasy.com
ns13.dnsmadeeasy.com
ns11.dnsmadeeasy.com
ns10.dnsmadeeasy.com
ns12.dnsmadeeasy.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:142.0.164.47 include:us._netblocks.mimecast.com include:sendgrid.net include:_spf.bullhornmail.com include:mail.zendesk.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- 52f0553738534d62aee7f6c5a313b153
- MS=ms35422583
- smartsheet-site-validation=sNfb36xeQTNhVbxKMLRcIb2nB1QUhEIw
- MS=4AEA7A8417B0EFE06986DC96D205342288C30D3A
- pguEHXRstsP+QXDn6BjZEOjuC4t5ycr6ROoFdKPDBb/CH0fqaLQooT7atcuox3QqyhRDwNsaFi2ox+kCUe9UWw==
- google-site-verification=rmDrFLqbl4WftXIv1Q78acLHucVf17RPuZrNDdu8Y2Y
- 0ed1fe018a5d30a7a429ce4962b6a3c98405d253b3
- SPFv=spf1 ip4:142.0.164.47 include:us._netblocks.mimecast.com include:sendgrid.net include:_spf.bullhornmail.com include:mail.zendesk.com -all
- 325382d4ij371ya4v8hp
- ZOOM_verify__4gtxruYRZi3BQiQlyWK8Q
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