All, Found out postfix can do exactly what I wanted.... I did:
In /etc/postfix/main.cf I added the line: transport_maps = hash:/etc/postfix/transport Then in the file /etc/postfix/transport I put the line: mycompany.com smtp:[smtp-relay_inside_host:25] then I ran the command: postmap /etc/postfix/transport All is working just lovely, mail for mycompany.com gets relayed to the inside host, and all other mail is delivered as normal. A gotcha, In the file /etc/postfix/transport, The square brackets arround the hostname tell postfix to ignore the MX records for mycompany.com. Life with linux is good. :) Robert Toole Sr. Systems Engineer KN Logistics / Calgary Adil Kodian wrote: > you could always do procmail. procmail can do a certain activity based > on some pattern matching rules to incoming mail. > > On 11/26/05, *Robert Toole* < [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Bogi, > > I agree that would be the best, unfortunately I do not control the dns > for my company's domain, for that to work, I would need to duplicate > manually the whole DNS zone for mycompany.com > <http://mycompany.com>, so I could alter the MX > records. Not very easy I think... > > > bogi wrote: > > Hi Robert. > > I think, it would be a good idea, to setup an internal dns, that > way you can > > have postfix look at the mx records , yada yada and work > properly. And yes > > you can safely use relay_domains and relay_host at that point. > You can also > > glob [EMAIL PROTECTED] and foreword to that, there are 2 problems, if > you foreword > > like that a spoofer to the domain would get foreworded. And yes, > with the > > internal dns, you can foreword using the internal network (lots > faster) . > > Cheers > > Szemir > > > > On November 26, 2005 06:49, Robert Toole wrote: > > > >>All, Sorry for the long post, but I just want to be clear... > >> > >>Googled for this, but I just can't seem to find a specific answer... > >> > >>Is it possible to get postfix to relay mail to a specific host, but > >>*only* for a single destination domain? > >> > >>My company has a global e-mail system that sucks. (slow, looses > mail, > >>yada yada) However, and now they are making a change that will > not allow > >>it to accept mail from the public internet where the From header > is the > >>company domain. example: > >> > >>If I want to send mail from [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> to [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>, > >>the global mail server will only accept this mail if it arrives from > >>inside the private company network. > >> > >>My solution in the past has been to run my own mail server that sends > >>all mail directly to the destination domains thru the public > >>internet.... so at least mail sent from my site gets where it is > going > >>in a timely fashion. > >> > >>My Problem: > >> > >>My mail server does an MX lookup for mycompany.com > <http://mycompany.com>, and gets the > >>external public internet ip address. This won't work, as my box then > >>sends the mail to the company server the wrong way. (Through the > public > >>internet instead of the internal network) and the mail gets rejected. > >>This is a good thing actually, for spam and security purposes) > >> > >>I need my server to relay messages going to mycompany.com > <http://mycompany.com> to a specific > >>inside host (ignoring the MX record) and then send all other mail > >>directly by itself to all other destination domains. > >> > >>Can Postfix do that with the relay_host and relay_domains parameters? > >>The documentation is a bit confusing to me... > >> > >>Thanks, > >> > >>- > >>Robert Toole > >>Sr. Systems Engineer > >>KN Logistics / Calgary > >>[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > >>(403) 717-8463 > >> > >>_______________________________________________ > >>clug-talk mailing list > >>[email protected] <mailto:[email protected]> > >>http://clug.ca/mailman/listinfo/clug-talk_clug.ca > <http://clug.ca/mailman/listinfo/clug-talk_clug.ca> > >>Mailing List Guidelines (http://clug.ca/ml_guidelines.php) > >>**Please remove these lines when replying > > > > > > > > _______________________________________________ > > clug-talk mailing list > > [email protected] <mailto:[email protected]> > > http://clug.ca/mailman/listinfo/clug-talk_clug.ca > > Mailing List Guidelines (http://clug.ca/ml_guidelines.php) > > **Please remove these lines when replying > > > > _______________________________________________ > clug-talk mailing list > [email protected] <mailto:[email protected]> > http://clug.ca/mailman/listinfo/clug-talk_clug.ca > Mailing List Guidelines ( http://clug.ca/ml_guidelines.php) > **Please remove these lines when replying > > > > ------------------------------------------------------------------------ > > _______________________________________________ > clug-talk mailing list > [email protected] > http://clug.ca/mailman/listinfo/clug-talk_clug.ca > Mailing List Guidelines (http://clug.ca/ml_guidelines.php) > **Please remove these lines when replying _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
