Autor: Thomas Jacob Fecha: A: exim-users Asunto: Re: [exim] Sender callout verification with warning only
Maybe also consider tweaking exim's various callout caching timers?
> - maintain a list of domains you never call out to
> - do as much envelope-checking as you can before triggering a callout
> (DNSBLs, verify=sender, SPF pass, HELO sanity)
> - expect to be listed by some agressive DNSBLs
> - don't go near SPAM-L