Re: Postfix question

[snip]
> If you describe your setup and needs for us, a better advice might surface :)

Yeah, it's a bit confusing, I know. I'll try to explain it.

For every domain this customer owns:
first MX points to the customers own server.
second MX points to my server running postfix with an entry in  
/etc/postfix/transport:
domain.com                      smtp:[mail.domain.com]

Now, normally this is ok as my server is the fallback mailserver if  
the customers server is offline, but thanks to you guys I have  
exellent filtering on my server for spam :) and the customer has a  
non-tsl mailserver (mac osx) controlled by someone else. I suggested  
to relay all his mail through my server.

So, I could simply remove the first MX in the DNS but that leaves port  
25 on the customers server unfiltered. The guy who is the admin of  
this server has no clue how to enable only traffic from my server and  
has no firewall to control this. I simply wanted to give him a  
suggestion how set this in postfix on his side.

Ariën