On Fri, Nov 03, 2006 at 11:51:28 -0600, Jim Garrison <jhg@xxxxxxxx> wrote: > > I think you'll find that trying to run OUTGOING mail from your server > will be a > continuous exercise in frustration. The IP address you get will be in a > netblock of > known DSL addresses, and will probably have an rDNS entry that also > identifies > it as a DSL line. Many spam blacklists (RBLs) automatically block DSL > netblocks > and rDNS entries because of the simple fact that a huge percentage of spam > originates at these addresses. Here's what happens if your SMTP server is > configured to deliver mail directly: He was going to get static IP addresses. Those don't typically get black listed in blocks the same way dynamic ones do. Also they may let him set up PTR records that list hist hostname rather than a name that looks like a random DSL hostname. (For example Speakeasy will do this for you.)
