Howdy folks, I'm setting up a small (2-3 workstations, one server, all debian) network at home, and I'm trying to implement an idea that I had for the mail system. My apologies if it's too offtopic.
The scenario is: I have several email addresses, [EMAIL PROTECTED], [EMAIL PROTECTED] and [EMAIL PROTECTED] At the moment, I use fetchmail to pull all my email from these three accounts onto my box. This is nice, except that each account has to send messages through a different SMTP server. My idea is to set up the network server as a smarthost(?). All the other machines on the network would just send all their (non-local) mail to it, and it would send these messages via the appropriate SMTP server. Basically, the server would have a little table (or whatever) like this: #from address smtp server [EMAIL PROTECTED] mail.isp1.com [EMAIL PROTECTED] smtp.mailhost.com [EMAIL PROTECTED] smtp.university.edu and would relay(?) messages to the correct SMTP server depending on the From: header in the message. Firstly, is this a good idea? Would it horribly violate some basic RFC and bring a thousand years of darkness upon our planet? Can Exim do it, or do I need to switch MTAs (perhaps even to that mythical beast, Sendmail)? The server will be on a ppp/dial-on-demand link, so I can't just set up my own 'proper' domain and mail system. Secondly, where would I find out about this sort of thing? Is it an Exim issue, a Debian issue or a generic mail issue? I've tried to read through the Exim documentation but it is quite dense (for me anyway) and I don't really know all that much about how SMTP works. I've been using Linux for a couple of years now (Debian for one of those) and I am willing to go and RTFM, if only I could find the right FM to read. It does sound vaguely related to the re-write features of Exim, but I could not find any sort of documentation for the not-stupid-yet-quite-clueless user. Anyhow, thank you for your time, and hopefully someone can point me in the write direction.
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