[Dovecot] recipient delimiters and virtual users

[Jerry]

On Sat, 28 May 2011 17:53:38 +1000
Nick Edwards <nick.z.edwards at gmail.com> articulated:

> Is there a known workaround for users who want to use the old
> recipient delimiter plus sign method of sorting their mail? eg:
> foo.bat +dovecot at example.com <foe.blow%2Bdovecot at example.com>
> 
> This does not work with postfix/dovecot, but if we tell
> postfix/system-passwd to use the recipient_delimiter = +  it works
> just like I recall sendmail did, but we no longer use local users
> only  virtual dovecot LDA w/mysql.
> 
> postfix appears to accept it testing by telnet, but then the message
> gets a new DSN generated saying no user, so
>   dovecot LDA must not work by default with this.
> 
> Postfix 2.8.3
> Dovecot 1.2.17
> MySQL 5.5.12
> 
> 
> our postfix master.cf is
> dovecot   unix  -       n       n       -       -       pipe
>    flags=DRhu user=mail:mail argv=/usr/libexec/dovecot/deliver -e -d
> ${recipient}

I use "+" addressing with Postfix & dovecot without a problem. This is
from the Postfix master.cf file:

dovecot   unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail:vmail argv=/usr/local/libexec/dovecot/deliver -f ${sender}
  -d ${user}@${nexthop} -a ${recipient}

You should include the log entries, both Postfix and Dovecot that
pertain to this situation. And please, do not mangle them. It makes
figuring out what is happening so very much harder.

-- 
Jerry ✌
Dovecot.user at seibercom.net

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