Certificate fingerprints

These are the fingerprints for Fastmail SSL/TLS certificates. They can be useful if you need to confirm that non-browser connections are secure.

app.fastmail.com, imap.fastmail.com, smtp.fastmail.com, etc.

  • SHA-1 fingerprint: 08:9F:97:92:3D:5E:15:17:0F:4C:A6:9D:65:0C:82:FA:43:7D:B0:94
  • SHA-256 fingerprint: A1:66:0C:DA:B3:C1:3F:69:1D:A4:96:81:62:C0:60:C5:94:4C:E9:A2:86:1A:3F:09:6F:74:6D:F0:49:D7:C7:62

www.fastmailusercontent.com

  • SHA-1 fingerprint: D3:7C:50:6B:FE:48:BD:89:8E:CF:90:67:E3:B4:42:2A:40:9F:31:2E
  • SHA-256 fingerprint: 1E:95:2A:2D:68:3A:70:15:C9:5D:09:CA:4A:49:EE:3D:50:61:80:17:4C:05:E9:0D:69:F0:69:AA:FC:E7:A3:C4

mail.messagingengine.com (deprecated)

  • SHA-1 fingerprint: 10:98:18:10:B7:91:4B:D2:6D:71:A8:9D:F9:F0:59:40:09:4C:77:AE
  • SHA-256 fingerprint: FE:D6:1F:CD:91:73:EB:35:77:64:8F:A8:FA:21:5C:AF:15:79:FF:3F:CC:70:C5:2D:AA:02:BB:2D:F1:B2:B4:FF
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