Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sibconcrete.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 14:24:14 UTC · ↺ Refresh
MX Hostnames
- filter2.upwardmail.net
- filter.upwardmail.net
MX Priorities
- filter2.upwardmail.net: 10
- filter.upwardmail.net: 10
A / AAAA Records
- 68.66.200.212 ↩ mi3-tr102.supercp.com
Mail Server IPs
- 216.24.56.69 ↩ filter2.upwardmail.net
- 216.24.56.71 ↩ filter.upwardmail.net
SOA Record
Raw SOA
ns1.supercp.com myron_wittmer.yahoo.com 2026020801 3600 1800 1209600 86400
Primary NS (mname)
ns1.supercp.com
Admin Email (rname)
myron_wittmer@yahoo.com
Serial
2026020801
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.supercp.com
ns3.supercp.com
ns2.supercp.com
ns4.supercp.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:emypeople.net include:upwardmail.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:emypeople.net include:upwardmail.net ~all
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