Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cityoffrederickmd.gov
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 04:59:53 UTC · ↺ Refresh
MX Hostnames
- mx-02-us-east-2.prod.hydra.sophos.com
- mx-01-us-east-2.prod.hydra.sophos.com
MX Priorities
- mx-02-us-east-2.prod.hydra.sophos.com: 20
- mx-01-us-east-2.prod.hydra.sophos.com: 10
A / AAAA Records
- 208.90.188.168 (no PTR)
Mail Server IPs
- 3.138.43.149 ↩ ec2-3-138-43-149.us-east-2.compute.amazonaws.com
- 18.118.219.4 ↩ ec2-18-118-219-4.us-east-2.compute.amazonaws.com
- 18.189.107.171 ↩ ec2-18-189-107-171.us-east-2.compute.amazonaws.com
SOA Record
Raw SOA
ns10.dnsmadeeasy.com dns.dnsmadeeasy.com 2009010146 43200 3600 1209600 180
Primary NS (mname)
ns10.dnsmadeeasy.com
Admin Email (rname)
dns@dnsmadeeasy.com
Serial
2009010146
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns11.dnsmadeeasy.com
ns13.dnsmadeeasy.com
ns10.dnsmadeeasy.com
ns14.dnsmadeeasy.com
ns15.dnsmadeeasy.com
ns12.dnsmadeeasy.com
SPF Record
✓ Strict (-all)
v=spf1 mx a include:_spf.psm.knowbe4.com include:spf.constantcontact.com include:spf.cashedge.com include:spf.protection.outlook.com a:vpn.cityoffrederick.com a:mail.cityoffrederick.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;pct=100;aspf=r;adkim=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
5 records- sophos-domain-verification=ac4f99d30b1aae4a1239aceb14c40f2d1fa14fc2
- SPFv=spf1 mx a include:_spf.psm.knowbe4.com include:spf.constantcontact.com include:spf.cashedge.com include:spf.protection.outlook.com a:vpn.cityoffrederick.com a:mail.cityoffrederick.com -all
- MS=ms46717781
- r4zfnRbVM1uulDPw5Vdi/FCyBgntZ90bj8MRQaeFWhKRrMQOG6HtXjNK40YtEVYBP99vDQ/wcX8Pn8hqLbYiRQ==
- rhn43enubuki373d5hs1kjmel4
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