Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cityofdubuque.org
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 03:47:02 UTC · ↺ Refresh
MX Hostnames
- mx-02-us-west-2.prod.hydra.sophos.com
- mx-01-us-west-2.prod.hydra.sophos.com
MX Priorities
- mx-01-us-west-2.prod.hydra.sophos.com: 10
- mx-02-us-west-2.prod.hydra.sophos.com: 20
A / AAAA Records
- 208.90.190.253 (no PTR)
Mail Server IPs
- 50.112.72.129 ↩ ec2-50-112-72-129.us-west-2.compute.amazonaws.com
- 44.234.222.180 ↩ ec2-44-234-222-180.us-west-2.compute.amazonaws.com
- 34.215.37.215 ↩ ec2-34-215-37-215.us-west-2.compute.amazonaws.com
SOA Record
Raw SOA
ns63.worldnic.com namehost.worldnic.com 126020209 10800 3600 604800 3600
Primary NS (mname)
ns63.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126020209
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns63.worldnic.com
ns64.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a ip4:69.71.62.18 ip4:208.78.169.130/32 ip4:208.78.169.153/32 ip4:64.33.158.240/29 ip4:207.191.204.146/29 include:spf.protection.outlook.com include:_spf.prod.hydra.sophos.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
4 records- sophos-domain-verification=e2ec9638c01613362ace7bb58c83a9998a7fa8d0
- i2ik5g2jcm183da9v2r5c711gv
- MS=ms23177143
- SPFv=spf1 mx a ip4:69.71.62.18 ip4:208.78.169.130/32 ip4:208.78.169.153/32 ip4:64.33.158.240/29 ip4:207.191.204.146/29 include:spf.protection.outlook.com include:_spf.prod.hydra.sophos.com ~all
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