sieve - Failed to store into mailbox 'INBOX/${1}': Mailbox doesn't exist: INBOX/${1}

[Stephan Bosch]

Op 1/1/2018 om 1:04 PM schreef Ludovic Terrier:
> Hello,
>
> First of all, happy new year!
>
> I’ve recently configured my mail server and was using a simple sieve rule in order to store all my ‘user+pattern at example.com’ ingoing email to be stored in the INBOX/pattern folder.
> This setup worked very well. I restarted my server this morning (don’t know if it’s related…) and since Dovecot keep storing my emails in INBOX with following errors: 
>
> root at server:~# cat /var/mail/vhosts/example.com/ludovic/.dovecot.sieve.log
> sieve: info: started log at Jan 01 12:13:56.
> error: msgid=<20180101111353.C332C25386 at server.example.com>: failed to store into mailbox 'INBOX/${1}': Mailbox doesn't exist: INBOX/${1}.
>
> Sieve script:
> root at server:~# cat /var/mail/vhosts/example.com/ludovic/sieve/roundcube.sieve
> require ["envelope","fileinto","subaddress"];
> if header :contains "X-Spam-Flag" "YES"
> {
> 	fileinto "Junk";
> }
> if envelope :detail :matches "to" "*"
> {
> 	fileinto "INBOX/${1}";
> }
> # rule:[contact]
> if allof (header :contains "to" "contact at example.com")
> {
> 	fileinto "INBOX/contact";
> 	stop;
> }
>
> I don’t remember having made recent change in my Dovecot config… only adding the last rule in the sieve script.
> Any hint?
> Thanks.
>
> Please find below more info of my Dovecot setup (quite long). Is it better to use some pastebin for such long info?

The problem makes sense. The use of the ":matches" match type with
"${1}" used in the if block hints that the "variables" extension is
supposed to be used. However, it is not listed in the require line. In
that case any variables substitution is ignored, causing the error
you're seeing.

If this is what RoundCube outputs, there's something wrong with RoundCube.

Regards,

Stephan.