1 INFO-VAX	Thu, 11 Mar 2004	Volume 2004 : Issue 141       Contents: Re: SMTP filters  F ----------------------------------------------------------------------    Date: 10 Mar 2004 23:01:21 -0800. From: dieter.rossbach@gmx.de (dieter rossbach) Subject: Re: SMTP filters = Message-ID: <e1d40caf.0403102301.3d785aff@posting.google.com>   [ JF Mezei <jfmezei.spamnot@istop.com> wrote in message news:<404FD5B9.AC211DCB@istop.com>...  > K > However, VMS username resolution/verification is done separately once the A > received message has been queued and processed by the symbiont.   A This is one of the main disadvantages of the VMS Smtp-Server: The E message is transfered completely to my VMS system before any check is A done. This causes a lot of problems with spam to unkown user: the E message cannot be rejected because the sender is faked or even worse, E is send back to somebody who didn't send it, I had to much traffic on % my line because of that. My solution:   E Debian + Exim4 + spamassassin and a small /etc/aliases is now used as E my first email gateway. Exim4 checks the user where the MAIL FROM and B RCPT TO message as soon as they are read over the line and rejectsD everything that does not apply to my rules. Every other message goes? to my internal SMTP-Server on my Alpha, my users do not see the D difference and I redunced smtp traffic and SPAM by about 90%. ( I do7 not accept attachments with exe, vbs, com etc. as well)   F VMS TCPIP SMTPs concept is OK for mail from save sources but wrong for systems bound to the internet.   Dieter   ------------------------------   End of INFO-VAX 2004.141 ************************