> On Apr 25, 2017, at 1:35 PM, Luis Miguel Flores dos Santos > <miguel_flores_san...@hotmail.com> wrote: > > Victor can I use "Postfix After-Queue Content Filter" to insert new header > based in a query ?
Wrong question. You should not have to do this at all. Why do you have a proxy that cannot do mail routing between Postfix and the downstream MTAs? The right solution is deliver directly from Postfix to the intended destination. > Today I have 10 mail server and I have created a proxy for the domain to > coexist between them. And create a postfix to clients connect and send > message (Previous mail) What is the purpose of the proxy. Given that your English is poor, a longer description of the requirements will likely make more sense than a short one which will lose a lot in translation. -- Viktor.