Grelisting and gmail.com problem

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robocop
Posts: 28
Joined: Wed May 16, 2012 6:52 am

Grelisting and gmail.com problem

Post by robocop »

Hi everyone, I'm under attack spam, to avoid problems I activated greylisting, it's all ok the only problem is with gmail.com has a delay of 24h or two day.
I tried to upload ip for exceptions but the situation does not change.
windows 2008 ME 8.53 - mxuptime -

Tips?
Thank you

sdgwebdesign
Posts: 8
Joined: Tue Aug 06, 2013 8:10 am

Re: Grelisting and gmail.com problem

Post by sdgwebdesign »

Hi Robocop,

Unfortunately that won't help because Google's email service uses so many different IP addresses. Its a constant pain for greylists and Google's answer is to whitelist gmail. Given how much rubbish gets sent using gmail addresses these days thats not always an option, especially on a busy mail server. It might be possible to get a complete list of the IP addresses that Google use from somewhere but I've never tried looking.

Philb
Posts: 50
Joined: Fri Jul 25, 2003 11:02 pm
Location: Sydney, NSW, Australia

Re: Grelisting and gmail.com problem

Post by Philb »

Not the best solution to this problem but these work for me with postfix.

# Google IPv4 subnets
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
173.194.0.0/16
207.126.144.0/20
209.85.128.0/17
216.239.32.0/19

# Google IPv6 subnets
2001:4860:4000::/36
2404:6800:4000::/36
2607:f8b0:4000::/36
2800:3f0:4000::/36
2a00:1450:4000::/36
2c0f:fb50:4000::/36

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