Domain Overview
DNS: ✓ 1d ago
Checker: ✓ 1d ago
robertson-electric.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 00:40:25 UTC · ↺ Refresh
MX Hostnames
- de-smtp-inbound-1.mimecast.com
- de-smtp-inbound-2.mimecast.com
MX Priorities
- de-smtp-inbound-1.mimecast.com: 0
- de-smtp-inbound-2.mimecast.com: 0
A / AAAA Records
- 160.153.0.128 ↩ 128.0.153.160.host.secureserver.net
Mail Server IPs
- 194.104.110.22 ↩ de-smtp-inbound-1.mimecast.com
- 194.104.108.22 ↩ de-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns1-06.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-06.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-06.azure-dns.info
ns1-06.azure-dns.com
ns2-06.azure-dns.net
ns3-06.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:40.85.255.206 include:spf.exclaimer.net include:spf1.sonepar.ca include:sendgrid.net include:de._netblocks.mimecast.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 6 found
selector1._domainkey
selector2._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- SPFv=spf1 include:spf.protection.outlook.com ip4:40.85.255.206 include:spf.exclaimer.net include:spf1.sonepar.ca include:sendgrid.net include:de._netblocks.mimecast.com -all
- MS=ms10586480
- s9mov9lojden8n4ncf80lnuuhn
- 0ed1fe018afd7530d5fa014a0a94f044ac6df45f01
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