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Wanting Postfix and Courier acting like an exchange server

Hello Linux geniuses!

I wanted to create an exchange email server using Linux.
I have setup Postfix and Courier sucessfully on Ubuntu Server.

Now, it's suppose to get all the mail from other pop3/smtp accounts and have them locate to one mail box, and then be downloadable and send via a single pop3 and smtp location i.e. my server.
I'm not too sure what else to do now.
It works as in I can send mail internally. How do I get it to download from other accounts, and from a Microsoft exchange server account?

Have I done the right thing? If not, what have I done wrong?
How does it work exactly?

It talks about a domain name. I have one registered on an external website.
Do I need to install a DNS server inorder to register the internet domain name? How do I register the domain name on the internet with my local server?
How's the domain name related internally?

Any guidance would be much appreciated.

gn000we

Ok lots to cover here.

So for grabbing external mailboxes, I would suggest fetchmail. Its the ideal program for this. I have never used it, so that's as far as I can help.

As for postfix and domain. For internal you don't need you domain pointing to your server externally.

So:

1. What is the domain name you want to use?
2. What is the output of this command

Code:

postconf |egrep 'myhostname|mydestination'

Quote:

Originally Posted by DaveQB (Post 3759438)

Code:

postconf |egrep 'myhostname|mydestination'

Code:

lmtp_lhlo_name = $myhostname

local_transport = local:$myhostname

milter_macro_daemon_name = $myhostname

mydestination = localhost

myhostname = {my hostname}

proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $sender_bcc_maps $recipient_bcc_maps $smtp_generic_maps $lmtp_generic_maps

relay_domains = $mydestination

smtp_helo_name = $myhostname

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)

smtpd_proxy_ehlo = $myhostname

Dave, thanks for the reply! :)

That's what I got from the command you gave. I even sent it via postfix to myself (quite chuffed!). I have taken out my actual hostname for the server and replaced it with {my hostname}.

Forgive me for the late reply but I had other technical problems to deal with the server i.e. no internet connection!

I've installed fetchmail. In the process of configuration.
Many thanks on that one. :)