Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
city1st.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 13:37:26 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 185.148.129.150 ↩ server.dutchwebdevelopment.com
Mail Server IPs
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
pdns09.domaincontrol.com dns.jomax.net 2026022500 28800 7200 604800 600
Primary NS (mname)
pdns09.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026022500
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
pdns10.domaincontrol.com
pdns09.domaincontrol.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:207.46.163.247 ip4:74.126.9.238 ip4:72.52.238.74 ip4:207.158.48.193/26 ip4:209.216.210.32/28 ip4:198.37.147.129 include:support.zendesk.com include:amazonses.com include:mailgun.org ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; sp=reject; aspf=r;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
2 records- 0ed1fe018ac576de6ebc6d46afb41c92d48a2f6698
- SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:207.46.163.247 ip4:74.126.9.238 ip4:72.52.238.74 ip4:207.158.48.193/26 ip4:209.216.210.32/28 ip4:198.37.147.129 include:support.zendesk.com include:amazonses.com include:mailgun.org ~all
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