dovecot - Feb 2020 - shared folder name or public folder with mail address

On 15.02.2020 12:16, Tobias Kirchhofer wrote:
...
>     the sieve part seems to be very tricky.
>     My test is now working with a public folder and I have a
>     "sieve_before" script in place which works for rules of the
>     private namespace.
> 
>     But when the rule shall "fileinto" a public folder, the mail
isn't
>     filtered (moved) and syslog says
>     dovecot: lmtp(.): Error ... sieve...: Mailbox doesn't exist.
> 
>     After some tests I found out it always looks in the private (or shared)
>     namespace for that specfied folder.
>     Do I miss a config option to let dovecot sieve "fileinto" a
public
>     namespace folder?
>     I use dovecot version 2.2.13.
> 
> We ?fileinto? in this manner :
> 
> |fileinto ?Namespace/folder?; |
This is what is not working for me.

Your procedure below is good and maybe I will use parts of it, thank
you. But this part is working for already. The incoming mail
is sent to dovecot (postfix virtual alias working) and the
match in sieve script is correct too.
The problem is that dovecot (sieve) refuses to
 fileinto "Namespace/folder"
because it seems it wants to store the mail
in private namespace with "folder1/folder2" instead.
The first part of the fileinto path isn't used as
namespace name.
Is there a config option for this behaviour?

Armin
> The procedure in our setup is like this:
> 
>  1. Virtual alias for each public-Folder email address within postfix:
> 
> Pattern:
> folder at domain.tld <mailto:folder at domain.tld>
> listadm+Namespace/folder at domain.tld <mailto:folder at domain.tld>
> Example:
> info at domain.tld <mailto:info at domain.tld>
> listadm+Verteiler/info at domain.tld <mailto:info at domain.tld>
> 
> Verteiler is the namespace, info the mailbox. listadm is a pseudo user
> in this context which holds the ACL for fileinto the resulting mailbox
> with proper permissions.
> 
>  2. Disassemble the virtual alias address with sieve:
> 
> Excerpt of the script. It is actually more code because we sort out spam
> for public folder. German comments, sorry.
> 
> |# Hat Subadresse? if envelope :matches :detail "to"
"*" { #
> Adressaufbau: listadm+Namespace/liste@ # ${liste} wird Namespace/box set
> "liste" "${1}"; } [?] fileinto "${liste}"; |
> 
> I can send you the whole script if you need.
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On 15 Feb 2020, at 12:27, Armin Schindler wrote:
> On 15.02.2020 12:16, Tobias Kirchhofer wrote:
> ...
>>     the sieve part seems to be very tricky.
>>     My test is now working with a public folder and I have a
>>     "sieve_before" script in place which works for rules of
the
>>     private namespace.
>>
>>     But when the rule shall "fileinto" a public folder, the
mail
>> isn't
>>     filtered (moved) and syslog says
>>     dovecot: lmtp(.): Error ... sieve...: Mailbox doesn't exist.
>>
>>     After some tests I found out it always looks in the private (or 
>> shared)
>>     namespace for that specfied folder.
>>     Do I miss a config option to let dovecot sieve "fileinto"
a
>> public
>>     namespace folder?
>>     I use dovecot version 2.2.13.
>>
>> We ?fileinto? in this manner :
>>
>> |fileinto ?Namespace/folder?; |
>
> This is what is not working for me.
>
> Your procedure below is good and maybe I will use parts of it, thank
> you. But this part is working for already. The incoming mail
> is sent to dovecot (postfix virtual alias working) and the
> match in sieve script is correct too.
> The problem is that dovecot (sieve) refuses to
>  fileinto "Namespace/folder"
> because it seems it wants to store the mail
> in private namespace with "folder1/folder2" instead.
> The first part of the fileinto path isn't used as
> namespace name.
> Is there a config option for this behaviour?
Maybe you are missing an include?

We have:

```
require "fileinto";
require "mailbox";
require "envelope";
require "subaddress";
require "variables";
require "regex";
require "editheader";
require "include";

```

In dovecot.conf* i found no directly related settings. Just the usual 
sieve settings explained here 
https://wiki.dovecot.org/Pigeonhole/Sieve/Configuration

Can you see the Public namespace and the folder in your MUA or via 
telnet?

Are you sure the ACL are correct? Can be that the error message 
?Mailbox doesn't exist? is misleading and the permissions are not 
correct.

Here you can see how to debug if not already 
https://wiki.dovecot.org/Pigeonhole/Sieve/Configuration#Trace_Debugging


> Armin
>
>> The procedure in our setup is like this:
>>
>>  1. Virtual alias for each public-Folder email address within 
>> postfix:
>>
>> Pattern:
>> folder at domain.tld <mailto:folder at domain.tld>
>> listadm+Namespace/folder at domain.tld <mailto:folder at
domain.tld>
>> Example:
>> info at domain.tld <mailto:info at domain.tld>
>> listadm+Verteiler/info at domain.tld <mailto:info at domain.tld>
>>
>> Verteiler is the namespace, info the mailbox. listadm is a pseudo 
>> user
>> in this context which holds the ACL for fileinto the resulting 
>> mailbox
>> with proper permissions.
>>
>>  2. Disassemble the virtual alias address with sieve:
>>
>> Excerpt of the script. It is actually more code because we sort out 
>> spam
>> for public folder. German comments, sorry.
>>
>> |# Hat Subadresse? if envelope :matches :detail "to"
"*" { #
>> Adressaufbau: listadm+Namespace/liste@ # ${liste} wird Namespace/box 
>> set
>> "liste" "${1}"; } [?] fileinto
"${liste}"; |
>>
>> I can send you the whole script if you need.

-- 
collect at shift.agency
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On 15.02.2020 14:45, Tobias Kirchhofer wrote:
> On 15 Feb 2020, at 12:27, Armin Schindler wrote:
> 
>     On 15.02.2020 12:16, Tobias Kirchhofer wrote:
>     ...
> 
>         the sieve part seems to be very tricky.
>         My test is now working with a public folder and I have a
>         "sieve_before" script in place which works for rules of
the
>         private namespace.
> 
>         But when the rule shall "fileinto" a public folder, the
mail isn't
>         filtered (moved) and syslog says
>         dovecot: lmtp(.): Error ... sieve...: Mailbox doesn't exist.
> 
>         After some tests I found out it always looks in the private (or
>         shared)
>         namespace for that specfied folder.
>         Do I miss a config option to let dovecot sieve "fileinto"
a public
>         namespace folder?
>         I use dovecot version 2.2.13.
> 
>         We ?fileinto? in this manner :
> 
>         |fileinto ?Namespace/folder?; |
> 
>     This is what is not working for me.
> 
>     Your procedure below is good and maybe I will use parts of it, thank
>     you. But this part is working for already. The incoming mail
>     is sent to dovecot (postfix virtual alias working) and the
>     match in sieve script is correct too.
>     The problem is that dovecot (sieve) refuses to
>     fileinto "Namespace/folder"
>     because it seems it wants to store the mail
>     in private namespace with "folder1/folder2" instead.
>     The first part of the fileinto path isn't used as
>     namespace name.
>     Is there a config option for this behaviour?
...
> Are you sure the ACL are correct? Can be that the error message ?Mailbox
> doesn't exist? is misleading and the permissions are not correct.
You are correct. The message is misleading. And even worse, if I used
  fileinto :create "...."
the folder was created in private namespace then.

The shared and public folders need of course the
 anyone post
right to let fileinto work.

Now it works. Thank you Tobias.

Armin

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