Subfolder in sieve not working as expected

[Remy Zandwijk]

> On 16 Nov 2021, at 21:43, Kees van Vloten <keesvanvloten at gmail.com> wrote:
> 
> On 15-11-2021 23:04, dovecot at ptld.com wrote:
>>>> On 11-15-2021 3:46 pm, Kees van Vloten wrote:
>>> 
>>> I am trying to move incoming mails into subfolders with this sieve script:
>>> 
>>> require ["fileinto", "variables", "mailbox"];
>>> if header :matches "Delivered-To" "*@*"
>>> {
>>>     fileinto :create "INBOX/${2}";
>>> }
>> 
>> I am not using variables and my folders are pre-created. But just to give you a starting point, this is what works using maildir++ format with default directory layout.
>> https://doc.dovecot.org/configuration_manual/mail_location/Maildir/
>> 
>>    require ["fileinto"];
>>    # rule:[Dovecot]
>>    if header :contains "sender" "@dovecot.org"
>>    {
>>       fileinto "INBOX.Dovecot";
>>    }
> 
> ok, I am trying to start simple:
> 
> - removed the mail_plugin "listescape"
> 
> - set mail_location = maildir:%h/%d/%n/Maildir
> 
> - and changed the sieve script into:
> 
> require ["fileinto", "variables", "mailbox"];
> 
> if header :contains "Delivered-To" "@example.com"
> {
>     fileinto :create "INBOX.example";
> }
> 
> Running sieve from the cmdline returns:
> 
> error: msgid=<76c62f93-527a-d8d9-f787-65926d9c3e25 at domain.com>: fileinto action: failed to store into mailbox 'INBOX.example': Character not allowed in mailbox name: '.'.
> sieve-filter(vmail): Info: sieve: msgid=<76c62f93-527a-d8d9-f787-65926d9c3e25 at domain.com>: left message in mailbox 'INBOX'
> 
> For some reason the :create seems to have a problem with the folder separator '.'
> 
> Any clue how to get '.example' recognized as a subfolder?
> 
> - Kees

In your previous email, you wrote:

separator = ~

You might want to change that to:

separator =

(Which defaults to a dot as mailbox separator)

-Remy