Re: Courier 20240725 development build

Sam Varshavchik <[email protected]> Fri, 13 Sep 2024 07:27:40 -0400
Newsgroups	gmane.mail.imap.courier.general
Message-ID	<[email protected]>
Bernd Wurst writes:

> Am 13.09.24 um 00:38 schrieb Sam Varshavchik:
>>> The account data is set via web. The web process shall not have access to  
>>> the user account that handles the mailboxes.
>>> As our delivery goes to a program, this queries the database and simply  
>>> creates the maildir as needed.
>>
>> And it can create the maildir, and the .courier file together, at the same  
>> time. Something has to create the maildir. Whatever that something is it can  
>> also create the .courier file.
>
> This program is called from the .courier file that is should create. :)

Courier's mail delivery mechanism is very flexible and can be used to do all  
kinds of things. Like this kind of an arrangement, for example. But it  
doesn't always mean that it's a good idea.

From what I understand, you appear to be creating mail aliases that  
effectively point to the same account and rely on its sole .courier file to  
create all the scaffolding the first time a message gets delivered there,  
and figure out where each message goes, going forward. You might even have a  
welcome email that gets send immediately to the new alias, that triggers  
this action. I dimly recall several people, over the years, mentioning that  
they did something like that, too,

That kind of works, but the whole thing feels wobbly. I'm going to guess  
that you did not come up with this kind of scaffolding on your own, you  
probably followed some guide on the intertubes that explained how to do such  
a thing.

Just because there's a web site that explains how to do something doesn't  
mean that its advice is golden.

> This procedure only works if all deliveries use the same virtual home dir as  
> courier would not call anything before the .courier file is created.
>
>
>>  From what I can see, plusses are used as email address extensions far more  
>> often than dashes.
>
> You are right with this but that's not the point:
> You alter the address. Unconfigurable and unconditional. Plusses are taken  
> away from any further processing.

The same thing is done when - is used as a separator character, which was  
the Courier default from the beginning. This is nothing new, only a more  
widely accepted practice is now the default behavior.

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