Hello, Postfix users.

I am looking for a dynamic user mapping, if possible.
For instance, something like lua, python or perl, to return a user lookup.
What I need is something very simple and the language don't need to be advanced.

I'd like to give my users the possibility of creating themselves disposable 
email addresses,
using some form like '<uid><max_epoch>@<domain>'.
The script would compare the current time with the <max_epoch>, and would 
return the uid if not expired.

Of course, I could obfuscate the logic, using base32 or by encrypting the final 
recipient part with a user specific key,
albeit I think the encryption would be overkill.

Does anyone knows a way to achive this, please ?

Thanks.

Kind regards,
André
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