Hi, Not to highjack the thread, but there are also other things to consider.
I have no idea how on Postfix, but this could help you too Scott Lavoie. If there are multiple exchange backends for postfix/spamasassin gateway ... how could one validate that users exists, given that you only have a list of valid users for some of the exchange servers and the mailahead/milterahead/smtp are not an option? I'm looking for a pointer here ... transport_maps is for the entire domain and where to send the mail ... but, I'm lost about the validations of users for some of the domains ... thanks On Wed, May 19, 2010 at 11:02 PM, Kaleb Hosie <kho...@spectraaluminum.com> wrote: >> Can anybody point me in the direction of a document or place where I > could find information about setting up a >>solo Linux Debian server running spamassassin as a gateway spam filter that > sends the mail along to an exchange server? > > This can be confusing to those that have never done this before. What you > need is postfix to receive the mail, then for it to pass onto spamassassin > to scan it for spam. If it passes, then to forward it to exchange. > > I can't promise this will be a good how-to but it looks good; take a look. > http://www.debuntu.org/postfix-and-pamassassin-how-to-filter-spam > mvh Mikael Syska