On Sunday 28 January 2007 18:26, Soner Tari wrote: > On Sun, 2007-01-28 at 16:39 -0800, J.C. Roberts wrote: > > On Sunday 28 January 2007 03:03, Soner Tari wrote: > > > I'm running Postfix on OpenBSD and have multiple external links > > > on the same box. I want outgoing smtp connections to be routed to > > > ext_if2, but the rest to ext_if1. > > > > why? > > Because the ext_if2 has a DSL connection which is faster and > symmetrical, and more importantly has a C class IP, which is > essential if you don't want to be considered as a spammer by many > MTAs. Not to mention, one might need to load-balance based on ports. > > Other than the smtp port and Postfix, the ability to route based on > destination port may be important for a firewall with multiple > external links in general. Because you might like to route the > traffic originating from the firewall itself to whichever link you > wish, such as those by an http proxy.
You'll need to use both route-to and nat to pull it off but if your link dies, then you'll have a mess. -- cd ~. -Almost Home
