On Thu, 22 Jul 2010 12:55:12 -0700 Ted Mittelstaedt <t...@ipinc.net> wrote:
> The biggest downside IMHO is that you lose functionality on the RBL > > For example at 9am spammer spews. At 9:15 spammer is listed in RBL. > At 10:0m spammer mails you and your ISP picks up the mail because they > aren't using RBLs. Many do though, in which case there's no downside. > At 11:00 am the spammer's admin shuts the spammer > down and delists the IP from the RBL. At 2:00pm you come along and > fetch your mail, and scan all the headers, checking all the IPs in > RBLs and the spam's IPs are not in the RBL then, even though they were > earlier. That could happen, but it can also work the other way around and the address gets listed in the delay. You can also pick-up extra hits on URIBLs, pyzor etc. In my experience a few hours delay is beneficial.
