citygrid.com

Valid Email Server
Domain Lookup › citygrid.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
citygrid.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 20:23:42 UTC · ↺ Refresh

MX Hostnames

  • usb-smtp-inbound-1.mimecast.com
  • usb-smtp-inbound-2.mimecast.com

MX Priorities

  • usb-smtp-inbound-2.mimecast.com: 10
  • usb-smtp-inbound-1.mimecast.com: 10

A / AAAA Records

  • 13.33.67.98 ↩ server-13-33-67-98.jfk50.r.cloudfront.net
  • 13.33.67.31 ↩ server-13-33-67-31.jfk50.r.cloudfront.net
  • 13.33.67.103 ↩ server-13-33-67-103.jfk50.r.cloudfront.net
  • 13.33.67.108 ↩ server-13-33-67-108.jfk50.r.cloudfront.net

Mail Server IPs

  • 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com

SOA Record

Raw SOA ns-1639.awsdns-12.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1639.awsdns-12.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1639.awsdns-12.co.uk
ns-311.awsdns-38.com
ns-741.awsdns-28.net
ns-1142.awsdns-14.org

SPF Record

✓ Strict (-all)
v=spf1 include:usb._netblocks.mimecast.com include:iac.com include:amazonses.com include:aspmx.sailthru.com include:_spf.salesforce.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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
  • MS=ms90037239
  • MS=ms95440060
  • PP74soLG4oveGplcs+AgzU5xDE6TUn9ddgX+smgRO5UnhEyOGbkenVfQAxHq6dRA6rx2F9DTybgC5L1+G0SR1w==
  • google-site-verification=14KTjXkO_1TbAyj8vKSkRcDwRjXStOL5ncW1C9-dFPE
  • SPFv=spf1 include:usb._netblocks.mimecast.com include:iac.com include:amazonses.com include:aspmx.sailthru.com include:_spf.salesforce.com include:spf.protection.outlook.com -all
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