On Tue, Jun 22, 2004 at 05:59:54PM +1000, Russell Coker wrote: > On Tue, 22 Jun 2004 16:13, Craig Sanders <[EMAIL PROTECTED]> wrote: > > reject other dyn/dialups - they should use their own ISP or mail server. > > I second this. > > A user has no business making direct connections to mail servers.
I disagree. You want to block spam or viruses, this is OK but you are on the wrong way. You say that because unwanted mail comes often from a dynamic address, you will block all dinamic addresses. What do you tink if I block all the mail originated from a Windows machine, simply because many Windows machine are infected and send viruses/spam? I work for a firm and we ave about 150 Debian servers installed to customers sites, they are connected with adsl. The IP ranges are owned by the largest Italian provider and they are listed as dynamic ones, despite the fact that they are assigned in a static way. Our customers run their own mail server with SMTP, POP3, IMAP, and webmail. You have to explain to me why you are blocking their mails. You also have to explain to me why do you want to force them to use a smart host for their outgoing mails. They have purchased bare adsl connectivity, why do you want force them to purchase also smtp service from an ISP? You are following an unexistant cause-effect link and you are wasting your time. For a virus writer it is a metter of an hour to change his code to post to the isp's smtp server instead of posting directly. Now you have an huge infrastructure (dynaddr lists) perfectly useless that do big harm to the network. -- Niccolo Rigacci Firenze - Italy War against Iraq? Not in my name!
