Re: Move user+tag@domain.tld into tag folder (if it exists)

[Benjamin Stürz]

Hello Michael,

Thanks for helping me!

I too use dovecot, but I'm not really familiar with it.
That's why I took most of my config from a tutorial.

As far as I can tell, I have to put something like this into my config:

protocol lmtp {
  mail_plugins = $mail_plugins sieve
}

But how do I connect it with my script?

I'm thinking of using a script like this:

#!/bin/sh

# Usage: $0 user[+tag]@domain.tld

# user[+tag]
user_tag=$(echo "$1" | cut -d@ -f1)

# domain.tld
domain=$(echo "$1" | cut -d@ -f2)

# user
user=$(echo "${user_tag}" | cut -d+ -f1)

# [tag]
tag=$(echo "${user_tag}" | cut -d+ -f2)

prefix="/var/vmail/${domain}/${user}"

[ "$tag" ] && echo "${prefix}/${tag}" || echo "${prefix}/Inbox"

My current /etc/dovecot/local.conf:

auth_mechanisms = plain login
first_valid_uid = 2000
first_valid_gid = 2000
mail_plugin_dir = /usr/local/lib/dovecot
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character 
vacation subaddress comparator-i;ascii-numeric relational regex  imap4flags 
copy include variables body enotify environment mailbox date index ihave 
duplicate mime foreverypart extracttext imapsieve vnd.dovecot.imapsieve
mbox_write_locks = fcntl
mmap_disable = yes

passdb {
        args = scheme=CRYPT username_format=%u /etc/mail/credentials.dovecot
        driver = passwd-file

name = }

mail_location = maildir:/var/vmail/%d/%n:INBOX=/var/vmail/%d/%n/Inbox:LAYOUT=fs
namespace inbox {
        inbox = yes
        mailbox Drafts {
                auto = subscribe
                special_use = \Drafts
        }
        mailbox Junk {
                auto = subscribe
                special_use = \Junk
                autoexpunge = 30d
        }
        mailbox Sent {
                auto = subscribe
                special_use = \Sent
        }
        mailbox Trash {
                auto = subscribe
                special_use = \Trash
        }
        mailbox Archive {
                auto = subscribe
                special_use = \Archive
        }
}

plugin {
        imapsieve_mailbox1_before = 
file:/usr/local/lib/dovecot/sieve/report-spam.sieve
        imapsieve_mailbox1_causes = COPY
        imapsieve_mailbox1_name = Junk
        imapsieve_mailbox2_before = 
file:/usr/local/lib/dovecot/sieve/report-ham.sieve
        imapsieve_mailbox2_causes = COPY
        imapsieve_mailbox2_from = Junk
        imapsieve_mailbox2_name = *
        sieve = file:~/sieve;active=~/.dovecot.sieve
        sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment
        sieve_pipe_bin_dir = /usr/local/lib/dovecot/sieve
        sieve_plugins = sieve_imapsieve sieve_extprograms
}

protocols = imap sieve

service imap-login {
        inet_listener imap {
                port = 0
        }
}

service managesieve-login {
        inet_listener sieve {
                port = 4190
        }

        inet_listener sieve_deprecated {
                port = 2000
        }
}

ssl_cert = </etc/ssl/mixdown.me.crt
ssl_key = </etc/ssl/private/mixdown.me.key

userdb {
        args = username_format=%u /etc/mail/credentials.dovecot
        driver = passwd-file

name = }

protocol imap {
        mail_plugins = " imap_sieve"
}

On 09.04.23 22:00, Michael Breuer wrote:

Hello Benjamin,

what mda do you use? I use dovecot and a sieve script to process incoming mail.

Instead of saving mail directly to maildir, I transfer it to the mda via lmtp. 
The required changes on the smtpd site would look like this:

On 9. Apr 2023, at 16:04, Benjamin Stürz <benni+open...@stuerz.xyz> wrote:

I think this line has to be changed:
action "domain_mail" maildir 
"/var/vmail/%{dest.domain:lowercase}/%{dest.user:lowercase|strip}/Inbox" virtual 
<virtuals>

action "domain_mail" lmtp "/var/dovecot/lmtp" virtual <virtuals>

In dovecot, you need to activate&configure the sieve plugin and a script for 
your user account.