I am currently using 3 MS Exchange servers from my head office in Sweden. I would like to install a Linux mail server in South Africa as a pilot project. Here is the problem...

I need a low budget solution:
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The Linux server needs to collect mail from the exchange servers and store it as a remote mail box server and then forward it to clients as they request it.

What software would be recommended?

All help would be appreciated....

Are you looking for a store and forward solution? Or a mail relay? Meaning are you looking to relay mail to/from Africa or will you be using the Africa location to store and forward in case your other locs mail servers crash?

Well if you don't want the Exchange servers directly accessing the Internet and want Linux to do this instead, you can setup the "smarthost" option on Exchange to send all Internet mail (not your internal mail) to the IP of the Linux box. You can configure Postfix or Qmail on Linux to receive the mail and store it.

I'm not exactly sure what you're asking, though. Do you want mail for all Internet domains to go there, or just for a few domains that your users get mail at? You need to provide more details.

I need some additional information .
Linux server must colect mail from server in sweden ? or receive (or relay ) mail from (to ) main office ?
M$ Exchange its no mail server only ( NOT only SMTP POP IMAP)
What you mean ?
Mail server in SA store Mailbox using Sweden server ?
I am using Postfix + vm-pop3d (store few domain ) & its work good .
May its help you ?

Sorry for my bad english

Thanx to all for the quick responses.

More info:

Currently my M$ Exchange servers in Sweden receive and store all my mail entering the company. I can set them up to forward all received mail for a list of user accounts to a remote ?Exchange? server in South Africa which will store these messages.

The local SA mail server will be forwarding all out going mail to the Swedish servers which will in turn send them to there destination.

The M$ Exchange server is hosting all calander info for each user as well.

Hope this helps.

create forward list look as :
user1@sweserver.com user1@saserver.com
user2@sweserver.com user2@saserver.com


prepare SA server send all mail throw Swedish server . ( its no hard , if you use Postfix I may add some additional information)
Set SA server as trusted server for SW server
I see one problem only:
letter from user1@saserver.com to user2@saserver.com send direct to user2.saservermailbox
but
from user1@saserver.com to user2@swserver.com send fine
letter path(for user2@swserver.com) :
user1 --> saserver -->swserver--> sasever->user2.mailbox
but for user2@saserver.com:
user1--> saserver--> user2.mailbox
I'm sorry for my bad english

So bascially you want a Linux box to receive mail for certain users and allow them to retrieve it. All mail from the local office where the Linux box is should go back to the Exchange server.

OK, that is very simple. As long as you can forward the mail from Exchange (which I think is quite possible) you can configure Postfix (for example) to accept mail for those few users and store it locally. You can then setup something like UW-IMAP, Cyrus, etc to serve the mail via IMAP4, or Qpopper, etc to serve mail via POP3. Any mail that those local users send into the Linux box can be statically forwarded back to the Exchange server and Exchange should handle it from there. You will need to add the IP of the Linux box as a host which is allowed to relay through Exchange.

The calendars (if they're in Outlook) are accessed via MAPI which is Exchange-native. You won't be able to do that with Linux, but Linux does have several nice calendar and scheduling applications (the Evolution mail client has one, for instance).

This is correct, chort and sergkh.

Would I still be able to use M$ Outlook to connect to the Linux Mail Server in South Africa?

What software would be recommended for me to install on the Linux server to receive mail from the exchange server and store it in individual mail boxes?

What mail server software would be recommended?

PS. My aim is to implement an invisible mail server, i.e. the Exchange servers must think that they are forwarding and receiving mail to another Exchange server, but in fact they will be sending and receiving mail from a Linux server.

.....
vvandam

Sendind & receiving mail its SMTP only .
Im use Postfix for SMTP , vm-pop3d for POP3
courier for IMAP .
If you have fine connect ( short ping time ) all must be all right

Hi Guys

Here is another update to make the problem more complex...

I need to install the Linux Mail server into an existing NT domain. The users retrieving mail from this Linux box needs to be authenticated via the NT domain.

Any sugestions?

-----------
vvandam

Use OpenLDAP ...
(I do it mmm last year )