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download google ip addresses in order to whitelist in your firewall, e.g. pf.
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| #!/bin/sh | |
| dig TXT +short _spf.google.com | \ | |
| tr ' ' '\n'| \ | |
| grep 'include:' | \ | |
| sed 's/include://' | \ | |
| xargs -Ixxx dig TXT +short xxx | \ | |
| tr ' ' '\n' | \ | |
| grep '^ip[46]:' | \ | |
| cut -c5- | |
| # Outputs something like | |
| # 35.190.247.0/24 | |
| # 64.233.160.0/19 | |
| # 66.102.0.0/20 | |
| # 66.249.80.0/20 | |
| # 72.14.192.0/18 | |
| # 74.125.0.0/16 | |
| # 108.177.8.0/21 | |
| # 173.194.0.0/16 | |
| # 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 | |
| # 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 | |
| # 108.177.96.0/19 | |
| # 35.191.0.0/16 | |
| # 130.211.0.0/22 |
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unclear if that is just the mail related google ip addresses