Hello there,

First of all I tell you that this is my first postfix installation so please be patient...

I have following scenario:

fetchmail --> postfix --> amavis-new --> postfix --> exchange 2010. Everything -except exchange ;-)- runs on an opensuse 12.1 box.

Now, I have a list of domains entirely managed and hosted here so I have resolved everything using the transport file (do.main.name smtp:[exchange.ser.ver]) and the entries in the main.cf file (mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, do.main.one, do.main.two, domain.diffi.cult).

So far so good, everything seems to work for the "simple" domains.

Now, I have got one user with an address at domain.diffi.cult and this domain is not hosted by me. This user has a mailbox on the exchange server and everything is working fine on that side.

How can I configure postfix to deliver the mails for myuser@domain.diffi.cult locally and all the others @domain.diffi.cult to the internet?

Any help will be much appreciated!

Thank you very much in advance,
Luca

I am not sure if it is possible to deliver emails for myuser@domain.diffi.cult locally and all the others @domain.diffi.cult to the internet.
Instead I would simply forward all emails that are sent to myuser@domain.diffi.cult (on exchange) to some other email account on your linux box...
Regards,
Jernej

thanks a lot for the reply!
Maybe I wasn't clear enough... We are talking about an home network environment. I am the owner of those "simple" domains. All the managed domains are regularly polled with fetchmail, scanned for spam/viruses with amavis and then sent to the users mailboxes. Those domains can be managed locally because all user of those domains also have an exchange mailbox.
The user @ the difficult domain also has an exchange mailbox and has to send and receive mails using outlook/exchange. His address @ that domain can't be changed, it's an old known address. Exchange works fine. If he sends mails to the other users/domains it works, if the other users/domains send mails to him it works, especially within exchange.
The problem is that if I declare in postfix that domain as local, postfix tries to deliver all the mails addressed to users @ the difficult domain locally (to the exchange server) and that is wrong.
I succeeded in having a working config based on sendmail, but now for some reasons I have to switch to postfix.
Any clue anybody?

Thanks
Luca