Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
americanheatingandcooling.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 11:35:47 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 209.59.170.249 (no PTR)
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns1.ipower.com dnsadmin.ipower.com 2011041347 10800 3600 604800 3600
Primary NS (mname)
ns1.ipower.com
Admin Email (rname)
dnsadmin@ipower.com
Serial
2011041347
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.ipower.com
ns1.ipower.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:67.225.240.216 ip4:66.96.128.0/18 include:spf.protection.outlook.com include:us._netblocks.mimecast.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 a mx ip4:67.225.240.216 ip4:66.96.128.0/18 include:spf.protection.outlook.com include:us._netblocks.mimecast.com ~all
- DKIMv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApQN2En/GtAF3jjUi/yacMrxmEfTTZzdDMukfdFGjE0kcTNyfRNOlipk9By0z1qfmd6pJGpNZBBzlT7H+DNbPh5TEIUoH6ZYztatVSgdbMW9rO+8ONntnan7Qv/eMF3hfh1lIMaVC1j4qa2FtIhDL23/gkpkMtmnypNr31M7OT3Es+xVPD2qer9BfMPqpusk5f8nobKqQER7LDJ/CSYBhKJOejSiG518wW8Xg+qOjrbMw6CDrhDhrRSPX8TtZ4dL3VJi7/SC//GDwP3CAjuQfFD8dv/4vtdYohEyTlGQgx6wn4guFT1bqa06ZmfR+PeJwxRHhFPL2oKZU7Ku3vaKh6wIDAQAB;
- MS=ms25228187
- h6jf4qijo25c46gdrgktiho3t5
- k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCm331CGFpfFO1n+gMnjJkAi3wtvgEHZ9MKOefC7+o0lVhuQy59BvfOjEwrkoCrohicD2gTzXzQ9IP5GoVkIbO31HXqLjW2vA3xp5T0N793mRe+ctm7sBFNih/TeKZp/lbR5xVBxLq00XYNft/DwarFQ9LlyxjlYk/NfceY5rJhiQIDAQAB
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