[Dovecot] How to turn off "plus" delivery

[Duane Hill]

Tuesday, July 12, 2011, 8:33:33 PM, Gene wrote:

> I use a lot of plus-style addresses (me+stuff at example.com), except
> I use underscore as the separator rather than plus
> (me_stuff at example.com).  My mail logs are full of messages where
> dovecot looks for a mailbox named "stuff", fails, then delivers to
> my inbox.  Is there a way to turn that off so that dovecot
> automatically delivers to my inbox?

Turn it off just for you? or globally?

The underscore as the separator is defined within your Postfix main.cf
config file. From your logs below, it uses the Dovecot deliver with
the '-m ${extension}' parameter. If you remove the '-m "${EXTENSION}'
parameter from the Postfix master.cf config file, that will eliminate
extension (folder) delivery for the entire server.

From the Dovecot deliver man page:

       -m mailbox
              Destination mailbox (default is INBOX).  If the mailbox  doesn't
              exist, it will not be created (unless the lda_mailbox_autocreate
              setting is set to yes).  If a message couldn't be saved  to  the
              mailbox for any reason, it's delivered to INBOX instead.

> Thanks!

> Here are the details:

 >> dovecot --version
> 1.2.15

 >> dovecot -n
> # 1.2.15: /etc/dovecot/dovecot.conf
> # OS: Linux 2.6.38-8-server x86_64 Ubuntu 11.04 
> info_log_path: /dev/null
> log_timestamp: %Y-%m-%d %H:%M:%S 
> ssl_cert_file: /etc/ssl/server.crt
> ssl_key_file: /etc/ssl/server.key
> ssl_cipher_list:
> ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RSA:+HIGH:+MEDIUM
> login_dir: /var/run/dovecot/login
> login_executable: /usr/lib/dovecot/imap-login
> mail_privileged_group: mail
> mail_location: maildir:~/Maildir
> mbox_write_locks: fcntl dotlock
> imap_client_workarounds: outlook-idle delay-newmail
> lda:
>   postmaster_address: postmaster at xxxxxxxxx.com
>   postmaster_address: postmaster at xxxxxxxxx.com
>   mail_plugins: sieve
>   quota_full_tempfail: yes
>   deliver_log_format: msgid=%m: %$
>   rejection_reason: Your message to <%t> was automatically rejected:%n%r
>   postmaster_address: postmaster at xxxxxxxxx.com
>   mail_plugins: sieve
>   quota_full_tempfail: yes
>   deliver_log_format: msgid=%m: %$
>   rejection_reason: Your message to <%t> was automatically rejected:%n%r
> auth default:
>   mechanisms: plain login
>   passdb:
>     driver: pam
>   userdb:
>     driver: passwd
>   socket:
>     type: listen
>     client:
>       path: /var/spool/postfix/private/dovecot-auth
>       mode: 432
>       user: postfix
>       group: postfix
> plugin:
>   sieve: ~/.dovecot.sieve
>   sieve_dir: ~/sieve
>   sieve: ~/.dovecot.sieve
>   sieve_dir: ~/sieve


>> cat ~/.dovecot.sieve
> require ["regex","fileinto"];

> if header :regex ["X-Bogosity"] ["^ *Spam,"] {
>   fileinto "caughtspam";
>   stop;
> }


> # excerpt from mail.log:
> postfix/pipe[32255]: BE4FCE24069: to=<gene_att at xxxxxxxxxx.com>,
> relay=bogo_filter, delay=1.2, delays=0.13/0.01/0/1.1, dsn=2.0.0,
> status=sent (delivered via bogo_filter service)
> postfix/qmgr[28916]: BE4FCE24069: removed
> postfix/cleanup[32254]: DBA1EE2406E:
> message-id=<1310331364610.sdc.29057010.18396.155116668 at connect2.wireless.att-mail.com>
> postfix/qmgr[28916]: DBA1EE2406E:
> from=<sdc.29057010.18396.155116668 at connect2.wireless.att-mail.com>, size=7859, nrcpt=1 (queue active)
> dovecot: deliver(gene): sieve:
> msgid=<1310331364610.sdc.29057010.18396.155116668 at connect2.wireless.att-mail.com>:
> failed to store into mailbox 'att': Mailbox doesn't exist: att
> dovecot: deliver(gene): sieve: script /home/gene/.dovecot.sieve
> failed with unsuccessful implicit keep
> dovecot: deliver(gene):
> msgid=<1310331364610.sdc.29057010.18396.155116668 at connect2.wireless.att-mail.com>:
> save failed to att: Mailbox doesn't exist: att
> dovecot: deliver(gene):
> msgid=<1310331364610.sdc.29057010.18396.155116668 at connect2.wireless.att-mail.com>: saved mail to INBOX
> postfix/local[32261]: DBA1EE2406E: to=<gene_att at xxxxxxxxxx.com>,
> relay=local, delay=0.05, delays=0.01/0.01/0/0.03, dsn=2.0.0,
> status=sent (delivered to command: /usr/lib/dovecot/deliver -c
> /etc/dovecot/conf.d/01-dovecot-postfix.conf -n -m "${EXTENSION}")
> postfix/qmgr[28916]: DBA1EE2406E: removed

-- 
Best regards,
 Duane                            mailto:duane at duanemail.org