Morning, I made a post earlier and Victor pointed me to some documentation. Unfortunately I think I did not properly explain the issue, and am still not able to get the results I'm looking for. I will try again here, thanks for your patience...
We have a large number of machines sending mail to an internal postfix relay. So the sender address is in the format of: sen...@server.domain.com where server is a variable and can be one of any of 1000 servers and domain.com is not a variable What I would like to do is rewrite the address as follows: sender@server.different_domain.com I need to keep the subdomain (server) but change the root domain to (different_domain.com) I've tried masquerading and generics table but the best I can come up with is: sender@different_domain.com which strips out the subdomain Any help would be appreciated. Thanks, Frank