US Data Center: Inbound Gateway

Apps → Google Workspace → Gmail → Spam, phishing, and malware → Inbound Gateway

Scroll to the section “Inbound gateway” and hover over and click the edit pencil. Enable Inbound gateway if it is not already enabled.

The inbound gateway setting is where you specify to Google what servers mail may pass through before the final delivery. Google needs to account for not only Google, but also INKY IPs. By adding these IPs, each email’s entire journey from initial entry into Google through INKY processing and the return journey to Google is accounted for. There are a total of twenty (20) INKY IPs and twenty-eight (28) Google IP blocks. It is recommended to add the INKY IPs first and save your work (blue save button) prior to installing the Google IPs as the Google UI times out and you will need to redo the installation.

INKY controlled IPs:

3.132.108.44

3.132.222.232

3.231.237.226

13.52.203.50

34.210.15.192

52.60.91.15

54.176.221.149

99.79.118.75

100.21.157.149

100.24.129.5

3.132.208.199

13.59.96.180

35.166.188.152

44.224.15.38

50.17.62.222

52.4.92.69

52.8.44.33

52.52.2.239

54.225.87.32

52.60.96.218

52.60.185.242

Google controlled IP Blocks:

35.190.247.0/24

35.191.0.0/16

66.102.0.0/20

64.233.160.0/19

66.249.80.0/20

72.14.192.0/18

74.125.0.0/16

108.177.8.0/21

108.177.96.0/19

130.211.0.0/22

172.217.0.0/19

172.217.32.0/20

172.217.128.0/19

172.217.160.0/20

172.217.192.0/19

172.253.56.0/21

172.253.112.0/20

173.194.0.0/16

207.126.144.0/20

209.85.128.0/17

216.58.192.0/19

216.239.32.0/19

2001:4860:4000::/36

2404:6800:4000::/36

2607:f8b0:4000::/36

2800:3f0:4000::/36

2a00:1450:4000::/36

2c0f:fb50:4000::/36

Regexp:

X-IPW-SCL: ([56789]|10)

Click the blue save button to save your work.