Osx mail localhost with mail app dovecot

brew install dovecot
Homebrew will give you instruction for the LaunchDaemons script needed to start and stop dovecot. Next step is to copy over some default configuration files.
cp -pr /usr/local/Cellar/dovecot/2.2.12/share/doc/dovecot/example-config /usr/local/etc/dovecot
Edit local.conf
nano /usr/local/etc/dovecot/local.conf
change all CHANGE_THIS
# A comma separated list of IPs or hosts where to listen in for connections. 
# "*" listens in all IPv4 interfaces, "::" listens in all IPv6 interfaces.
# If you want to specify non-default ports or anything more complex,
# edit conf.d/master.conf.
listen =
# Protocols we want to be serving.
protocols = imap
# Static passdb.
# This can be used for situations where Dovecot doesn't need to verify the
# username or the password, or if there is a single password for all users:
passdb {
  driver = static
  args = password=CHANGE_THIS_to_whatever_password_you_like
# Location for users' mailboxes. The default is empty, which means that Dovecot
# tries to find the mailboxes automatically. This won't work if the user
# doesn't yet have any mail, so you should explicitly tell Dovecot the full
# location.
# If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u)
# isn't enough. You'll also need to tell Dovecot where the other mailboxes are
# kept. This is called the "root mail directory", and it must be the first
# path given in the mail_location setting.
# There are a few special variables you can use, eg.:
#   %u - username
#   %n - user part in user@domain, same as %u if there's no domain
#   %d - domain part in user@domain, empty if there's no domain
#   %h - home directory
# See doc/wiki/Variables.txt for full list. Some examples:
#   mail_location = maildir:~/Maildir
#   mail_location = mbox:~/mail:INBOX=/var/mail/%u
#   mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n
# <doc/wiki/MailLocation.txt>
mail_location = maildir:/CHANGE_THIS_to_the_path_where_you_want_to_store_the_mail/%n
# System user and group used to access mails. If you use multiple, userdb
# can override these by returning uid or gid fields. You can use either numbers
# or names. <doc/wiki/UserIds.txt>
mail_uid = CHANGE_THIS_to_your_short_user_name_or_uid
mail_gid = admin
# SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
ssl = no
# Login user is internally used by login processes. This is the most untrusted
# user in Dovecot system. It shouldn't have access to anything at all.
default_login_user = _dovenull
# Internal user is used by unprivileged processes. It should be separate from
# login user, so that login processes can't disturb other processes.
default_internal_user = _dovecot
# Setting limits.
default_process_limit = 10
default_client_limit = 50
nano /usr/local/etc/dovecot/conf.d/10-auth.conf
Comment out the line that includes the default auth settings like this:
#!include auth-system.conf.ext
Disable the certs as well (or generate em.)
nano /usr/local/etc/dovecot/conf.d/10-ssl.conf
comment out:
#ssl_cert = </etc/ssl/certs/dovecot.pem
#ssl_key = </etc/ssl/private/dovecot.pem
make a plist for osx auto start
sudo touch /var/log/mail.log
sudo nano /Library/LaunchDaemons/homebrew.mxcl.dovecot.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
        <string>Dovecot mail server</string>
Now the server should start without any errors:
sudo launchctl load /Library/LaunchDaemons/homebrew.mxcl.dovecot.plist
If you need to stop it run:
sudo launchctl unload /Library/LaunchDaemons/homebrew.mxcl.dovecot.plist
By default dovecot logs will show up in /var/log/mail.log.


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