Patrick Andry said: > On June 17, 2005 08:15 am, Bart Silverstrim wrote: >
> Does Exchange 2000 still accept mail for non-existent users, as it does > for > 5.5? That right there was reason enough for us to put a proxy mail server > in > place in the first place. The spam would get sent to a million addresses, > then the exchange server would accept the entire message before generating > a > NDR. It was killing our server, when a sane mailserver ( I use Xmail) > drops > it after the rcpt command. The bandwidth savings on the spam and virus > mailings alone were reason enough to do this, not to mention cutting the > server load in half and saving us an upgrade cycle. I got around this problem by installing milter-ahead (snert.com) on the sendmail servers. The Exchange SA couldn't provide a clean list of valid addresses for my system so I now query that one before accepting mail. It cut our blow-back NDR garbage to zero. dp _______________________________________________ http://lurker.clamav.net/list/clamav-users.html
