Flexible relaying

jkstraw · *nix forums beginner Joined: 22 May 2008 Posts: 1

We are using postfix as an outgoing only MTA in our data center. Something like this:

Multiple internal networks => Postfix => Internet Destination

I am trying to figure out how to do the following:

networkA, B, C can relay to any destination (this already works)

networkD can only relay to a specific domain name (abc.com)

In the main.cf I have the "mynetworks = xxx.xxx.xxx.0/24, yyy.yyy.yyyy.0/24, etc" option listing all of the networks

I can't seem to figure out how this can be done. Basically we want our production sites to be able to e-mail any domain, and our staging servers to be restricted to e-mail our company domain. (staging and production networks being unique and separated by VLANS).

Thank you for any help (I tried searching for relevant posts - bu the search function did not seem to work)

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