Auteur: sharun Datum: Aan: Jan Johansson CC: exim-users Onderwerp: Re: [Exim] Possible Malice on the Internet??
Jan Johansson wrote: > > 25 it claims to be "tntkenya.com" and running "MDaemon".
> MDaemon will fail a relaytest if you forge the sender to be
> postmaster@<a valid domain for that MDaemon>
> It will happily pass that email along. Even after applying http://info.connect.com.au/docs/mdaemon/mdaemonsecurity.html it will still do that.
> You CAN block the postmaster account, but that will get you listed in the rfc-ignorant.org database instead. The best idea seem to be to hammer the people behind MDaemon and get them to fix this.
> Here is a link to a server running the newest MDaemon (with the security advice applied), that i tested. As you can see, it failed the test.
Youre wrong - IP shielding cure this problem at all
