On Fri, 2004-06-25 at 19:22 +0200, Franco wrote: > Hi, i say that someone is able to bounce a message through my > server to local user, it can use the server smtp to delivery > to local user but the mail from must be any local user. > > Example: on my server i have 20 local users, one of this > is pippo@xxxxxxxxx, someone send e-mail through my server using > my server smtp and in the from address of e-mail put pippo@xxxxxxxxx > it send the e-mail without problem. > So all who want do spamming on my local user can do this. > How can stop it? It would be very helpful if you included the details from you /etc/mail/ access file in a post to the list. The standard configuration for sendmail prevents it from doing as you suggest, this means you must have changed some thing (most likely in / etc/mail/access), if you can tell us what you changed, and what you want your mail server to do, then we will most likely be able to help you resolve the problem. Doug
