Fwd: Plus addressing on Sentora using Postfix

[Philip McGaw]

I am running Ubuntu 14.04.4 LTS “Trusty” and "postconf -d | grep mail_version” gives me “mail_version = 2.11.0”, with Dovecot 2.2.9

I have installed Sentora (http://sentora.org) which sets most of the configuration up for Postfix up, I have made some changes to allow me to use certificates for IMAP and SMTP SSL (https://skippy.org.uk/lets-encrypt-postfix-and-dovecot/),

My Postfix main config file is http://pastebin.com/hdxdNK4d
My Postfix master process configuration file is http://pastebin.com/YuCTq0JQ
Dovecot -n gives me the following http://pastebin.com/05xixDtD

I am trying to send an email to site at skippy.org.uk and site+test at skippy.org.uk (sending from an iCloud account), it works to site at skippy.org.uk (site at skippy.org.uk is a real email address), the lines from mail.log are as follows:

> Mar 11 17:48:07 njoror postfix/smtpd[32706]: connect from mr11p26im-asmtp004.me.com[17.110.86.109]
> Mar 11 17:48:07 njoror postfix/smtpd[32706]: Anonymous TLS connection established from mr11p26im-asmtp004.me.com[17.110.86.109]: TLSv1.2 with cipher DHE-RSA-AES128-GCM-SHA256 (128/128 bits)
> Mar 11 17:48:08 njoror postfix/smtpd[32706]: 1BAF055AB6: client=mr11p26im-asmtp004.me.com[17.110.86.109]
> Mar 11 17:48:08 njoror postfix/cleanup[32710]: 1BAF055AB6: message-id=<90594925-C294-4A38-8275-C23DA55A9308 at icloud.com>
> Mar 11 17:48:08 njoror postfix/qmgr[32599]: 1BAF055AB6: from=<philipmcgaw at icloud.com>, size=1513, nrcpt=1 (queue active)
> Mar 11 17:48:08 njoror postfix/pipe[32605]: 1BAF055AB6: to=<site+test at skippy.org.uk>, relay=dovecot, delay=0.43, delays=0.34/0.01/0/0.09, dsn=4.1.1, status=SOFTBOUNCE (user unknown)
> Mar 11 17:48:08 njoror postfix/smtpd[32706]: disconnect from mr11p26im-asmtp004.me.com[17.110.86.109]

vs

> Mar 11 17:49:23 njoror postfix/smtpd[32706]: connect from mr11p26im-asmtp004.me.com[17.110.86.109]
> Mar 11 17:49:23 njoror postfix/smtpd[32706]: Anonymous TLS connection established from mr11p26im-asmtp004.me.com[17.110.86.109]: TLSv1.2 with cipher DHE-RSA-AES128-GCM-SHA256 (128/128 bits)
> Mar 11 17:49:24 njoror postfix/smtpd[32706]: 33D2355AB9: client=mr11p26im-asmtp004.me.com[17.110.86.109]
> Mar 11 17:49:24 njoror postfix/cleanup[32710]: 33D2355AB9: message-id=<2456DC97-4E3A-4A91-B3A0-CAFE056F116F at icloud.com>
> Mar 11 17:49:24 njoror postfix/qmgr[32599]: 33D2355AB9: from=<philipmcgaw at icloud.com>, size=1249, nrcpt=1 (queue active)
> Mar 11 17:49:25 njoror postfix/smtpd[32706]: disconnect from mr11p26im-asmtp004.me.com[17.110.86.109]
> Mar 11 17:49:26 njoror postfix/pipe[32605]: 33D2355AB9: to=<site at skippy.org.uk>, relay=dovecot, delay=1.8, delays=0.63/0/0/1.2, dsn=2.0.0, status=sent (delivered via dovecot service)
> Mar 11 17:49:26 njoror postfix/qmgr[32599]: 33D2355AB9: removed


Looking at the lines from mail.log it looks like it thinks there should be a user called site+test at skippy.org.uk, this has been puzzling me for a while, I was wondering if any one on here could see what was wrong, and what I needed to change, Looking at a few examples and online guides I thought I had covered all the bases.

Looking at the log it looks like the message is either succeeding, or failing via Dovecot
> Mar 11 17:48:08 njoror postfix/pipe[32605]: 1BAF055AB6: to=<site+test at skippy.org.uk>, relay=dovecot, delay=0.43, delays=0.34/0.01/0/0.09, dsn=4.1.1, status=SOFTBOUNCE (user unknown)

Does any one have any ideas?
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