Re: [Sqlgrey-users] Pre Load

[Micha S. <mi...@ar...>]

Dan Faerch wrote:

> I agree with Lionel.
> Its best letting sqlgrey do all this since you really cant tell who is 
> valid senders if you dont temporally reject first, and then sees who 
> comes back. (which is what greylisting does)
>
> If you are worried that delaying all mail for 5 minutes at the same day 
> you enable sqlgrey, consider using the "discrimination" feature from 
> 1.7.4+. That will let you, via regular expressions, select what to 
> greylist and what to just let through . Good way of slowly introducing 
> greylisting by making the discrimination rules more and more restrictive.
>
>   
Where can I see more details on this 1.7.4 version, and the 
"discrimination" feature?
We've been using greylisting for several months, and while spam has 
indeed decreased dramatically, we have to spend time every day or two 
adding new entries to the client_fqdn_addr.local file because of false 
postivies. I think the problem is mostly mail servers that resend almost 
immediately and get marked as spam.

Thanks,
Micha