Nitin N:
> Hi folks,
>
> I was looking at Postwhite to generate whitelist IP addresses for
> Postscreen. So I set up and ran it once to look at the list of IPs it
> generates. Then I randomly checked a Google IP that was there in my maillog
> and noticed that it was not there in Postwhite's list. Well I do understand
> Postwhite's list is not supposed to be exhaustive and it needs to be
> regularly updated via cron.
>
> So, I was wondering if I could update my whitelist by continuously reading
> my maillog using some tool especially if the emails are from known domains
> such as Google, Outlook, Yahoo etc. Is there any tool out there which does
> this already?
Perhaps it would be easier to look up SPF records and expand those
into access lists? I'm sure somene did that 15 years ago.
Wietse