Alex via Postfix-users: > Hi, > > > > > We're only doing basic spam protection for them, > > > > What is the nature of the "basic spam protection"? Can it be done > > pre-queue? > > > > Yes, most likely, I would think. It's a basic spamassassin setup with a few > rules looking for specific patterns, as well as some RBL network checks. > > The only plausible solution on your end is to not queue mail for this > > domain, but rather proxy it through to the destination, with the > > response to "." coming from the final downstream systems. This may be > > possible with: > > > > http://www.postfix.org/postconf.5.html#smtpd_proxy_filter > > > > provided you can dedicate an IP address (port 25 smtpd(8) instance) for > > this destination. > > > So I would do this in place of the transport filter I currently have in > place? > > example.com smtp:mx1.hc4719.iphmx.com
No, that is an "after queue" filter. To avoid bouncing mail, use smtpd_proxy_filter (https://www.postfix.org/SMTPD_PROXY_README.html) Wietse _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
