On Wed, Aug 03, 2005 at 03:21:45AM -0700, Ramang G wrote:
For installing a mail server (postfix) for an organisation, is it necessary to have one Valid IP? or not an issue.
If you want to be able to receive mail as an SMTP server, you need an externally routable IP. (Google for what "externally routable" means.)
There are other ways of getting mail to a non-routable server, such as fetchmail. Note that for a multi-user system, these ways are kludgy hacks.