Email server IP addresses

Backlog emails such as notification emails are sent from a server with the IP addresses listed below. 

If your email server has restrictions on receiving emails from certain IP addresses, to receive Backlog emails, please allow these IP addresses. 

In addition, this information is published in DNS as a SPF record. 

  • 175.41.245.166
  • 175.41.248.139
  • 175.41.251.61
  • 175.41.251.66
  • 176.34.50.94
  • 176.34.50.98
  • 176.34.50.100
  • 176.34.50.101
  • 18.182.240.231
  • 13.114.234.119
  • 54.238.169.151
  • 54.238.231.33
  • 54.238.156.229
  • 54.238.134.171
  • 96.126.108.103
  • 139.162.22.126
  • 52.192.129.186
  • 52.192.173.69
  • 52.192.146.142
  • 52.192.183.200
  • 54.64.234.13
  • 52.198.28.74
  • 54.64.81.221
  • 54.249.55.138
  • 13.112.0.180
  • 52.192.255.114
  • 52.192.30.203
  • 52.194.174.20
  • 34.212.189.200
  • 54.68.187.242
  • 35.161.23.210
  • 35.165.0.244
  • 52.43.41.48
  • 52.43.44.46
  • 35.169.240.215
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