Milter-greylist

'Jeremy C. Reed' reed@... [milter-greylist]
<milter-greylist@yahoogroups.com> wrote:

> Something changed in the past few weeks for me where email from gmail
> servers is getting more and more delayed (days at a time) and now some
> mails are never getting delivered (timed out on sending side I assume).

I guess they added more server farms, and the message are resent from
random IP in pools you need to whitelist. 

You can update the whitelist by parsing the logs. Alternatively you
could trust gméail.com's SPF record (racl whitelist domain gmail.com spf
pass), or update your whitelist based on gmail.com SPF records:
64.18.0.0/20
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
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
172.217.0.0/19

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu@...