On 2008-12-22, Girish Venkatachalam <girishvenkatacha...@gmail.com> wrote: > > However I can whitelist gmail, aol, hotmail, rediff and so on since they > publish SPF records. > > Is there a way to determine the IP addresses yahoo! uses for sending > mail?
dnswl.org; either use the whole list, or grep out yahoo's addresses.
