> I used Postfix along time but my experience is that it is incredible > difficult to implement custom logic especially across the different > binaries/processes it uses to fulfil a mail delivery transaction. Its > designed in the "unix philosophy" and has good performance - great but > Postfix devs normally react hostile if asked for advanced features that > require tracking meta-information about messages across Postfix processes. > Its only the RFC compliant mail message state that persisting through the > entire transaction, nothing more. Milters can be injected but have > limitations and I get headaches from the configuration system. I shouldn't > complain too hard tho, because I'm grateful for how solid and secure and > bulletproof it has been. Thank you team Postfix. > > But I want more power and customization not only generic mailserver.
For sticking with Postfix, have a look at https://fuglu.org/ <https://fuglu.org/> — Matthias
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