On Mon, Jul 8, 2024 at 3:21 PM Bill Cole via Postfix-users <
postfix-users@postfix.org> wrote:
> On 2024-07-08 at 17:03:47 UTC-0400 (Mon, 8 Jul 2024 14:03:47 -0700)
> Simon Thorpe (PST) via Postfix-users <stho...@cloudflare.com>
> is rumored to have said:
>
> Hi
>
> I am working on a Postfix server which accepts email for the domain it's
> authoritative for (e.g. mydomain.com) and then duplicates each email to a
> configurable list of other domains, i.e. an email to al...@mydomain.com
> is
> forwarded onto al...@anotherdomain.com and al...@whatdomain.com.
>
> Easily configured as described in Postfix itself without additional
> software. If the list of inbound to outbound mappings is large, you might
> want to do it with an external DB such as MySQL.
>
Ahh ok, then I need to do more reading. I essentially want the following...
All emails to {alias}@mydomain.com sent onto any of a list of other
domains, i.e. {alias}@domain1.com, {alias}@domain2.com, etc.
If I can do this without code and purely in config, perfect.
> This server is being used for the demonstration of our own email security
> systems, where different sales people can get a steady flow of email to
> populate their own email inboxes.
>
> So far I have successfully built a Postfix server, configured it to accept
> mail and then I have a Python script which runs for each email received
> and
> enumerates through each domain I want to send to. So far, an initial
> prototype shows it is working. However, I want to now add a lot more
> logging and have the domain configuration come from a database.
>
> Ideally I want to be writing the Python in VSCode and running Postfix in a
> debug environment where I can step through code and develop quickly.
>
> What interface to Postfix are you using? Postfix has multiple ways it can
> connect to external software. However, none of them provide any sort of
> debug facility to step through running external code. Postfix is not a
> development environment. Postfix doesn't know anything about Python.
>
> Postfix DOES have extensive built-in support for distributing mail in very
> versatile ways. What you have described would not seem to demand additional
> new software.
>
I was using a custom filter in the master.cf,
mailrepeater-filter unix - n n - - pipe flags=Rq user=nobody
argv=/opt/python/forward_email.py
> I've tried searching, but I cannot find a way to debug Python scripts
> running in Postfix.
>
> And you never will. Python scripts DO NOT "run in Postfix" at all. It has
> various interfaces for external tools: Milter, policy daemon, SMTP proxy,
> content_filter and delivery via pipe are the main ones. It does not have
> any capacity to debug those external programs, as it does not control their
> execution environments.
>
> I don't like the idea of writing out a lot of logging
> lines, that's a slow way to develop the code.
>
> Welcome to the development of mail software. You will do a lot of logging.
>
Heh, ok. I mean, it's a way to solve an issue. But i'm used to developing
in a full debugger and able to step through things. But if I can achieve
this all with config, I can avoid writing any code!
>
> b...@scconsult.com or billc...@apache.org
> (AKA @grumpybozo@toad.social and many *@billmail.scconsult.com addresses)
> Not Currently Available For Hire
>
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