On Thu, Apr 01, 2010 at 11:49:50AM -0600, Glenn English wrote: > Is it possible to use postfix as a reverse proxy for my SMTP server?
Yes, but why? > I think what I'm asking is does postfix do its UBE and protocol checks > *before* it sends to a smarthost. Yes, but when Postfix is a proxy, there is no "smarthost" involved, that is what happens when Postfix is not a proxy. In proxy mode, all SMTP transactions are proxied to a fixed downstream SMTP server which ultimately accepts or rejects the message, but Postfix gets a chance to apply its policy first. http://www.postfix.org/SMTPD_PROXY_README.html -- Viktor. P.S. Morgan Stanley is looking for a New York City based, Senior Unix system/email administrator to architect and sustain our perimeter email environment. If you are interested, please drop me a note.