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computers:truenas:mail [06-Nov-2021 13:28] – [Set up the Mail Delivery Agent] Steve Joyntcomputers:truenas:mail [02-Feb-2025 16:14] (current) – external edit 127.0.0.1
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 </code> </code>
  
-====== Set up the Mail Delivery Agent ======+====== Set up the Mailbox ====== 
 + 
 +We need to define the default mailbox where all system messages are sent. 
 + 
 +Note: You can't log in as root to pick up your mail - that would be dangerous, because the mail system would have to run as root to access the files containing the mail. If there's any bugs in the mail server or its helper files, that could result in serious problems! So we need to direct all mail for root into another mailbox that we can access as an unprivileged user.  
 + 
 +The domain name (the bit after the @ sign in the email address) can be localhost, or the domain name you set up when you created this jail. If it is omitted, it will default to localhost. This is ok for emails between users of the same jail. 
 + 
 +The user name will be the same as the mailbox name (the bit before the @ sign). You will need to create a new user login, and assign a password, in the usual way.  
 + 
 +In this example I will be creating a mailbox called "administrator". 
 + 
 +Execute this... 
 +<code> 
 +jexec "ioc-${JAIL_NAME:?}" adduser 
 + 
 +</code> 
 + 
 +Provide this information when asked... 
 +<code> 
 +Username: administrator 
 +Full name: System Administrator 
 +Uid (Leave empty for default):  
 +Login group [administrator]: staff 
 +Login group is staff. Invite administrator into other groups? []:  
 +Login class [default]:  
 +Shell (sh csh tcsh bash rbash git-shell netcli.sh ksh93 mksh zsh rzsh scponly nologin) [sh]: nologin 
 +Home directory [/home/administrator]:  
 +Home directory permissions (Leave empty for default):  
 +Use password-based authentication? [yes]:  
 +Use an empty password? (yes/no) [no]:  
 +Use a random password? (yes/no) [no]:  
 +Enter password: ***** 
 +Enter password again: ***** 
 +Lock out the account after creation? [no]:  
 +Username   : administrator 
 +Password   : ***** 
 +Full Name  : System Administrator 
 +Uid        : 1001 
 +Class      :  
 +Groups     : staff  
 +Home       : /home/administrator 
 +Home Mode  :  
 +Shell      : /usr/sbin/nologin 
 +Locked     : no 
 +OK? (yes/no): yes 
 +adduser: INFO: Successfully added (administrator) to the user database. 
 +Add another user? (yes/no): no 
 +Goodbye! 
 +</code> 
 + 
 +====== Set up the SMTP Mail Delivery Agent ======
  
 I will be using the simple //sendmail// service that comes as standard with BSD installations. It just needs to be configured and started. I don't need any clever security, as it can only be accessed from the LAN, and I'm not going to tell it how to pass messages on to the outside world. I will be using the simple //sendmail// service that comes as standard with BSD installations. It just needs to be configured and started. I don't need any clever security, as it can only be accessed from the LAN, and I'm not going to tell it how to pass messages on to the outside world.
  
-1. Build the initial configuration+1. Build the initial configuration.
 <code> <code>
 jexec "ioc-${JAIL_NAME:?}" /bin/sh -c "cd /etc/mail && make" jexec "ioc-${JAIL_NAME:?}" /bin/sh -c "cd /etc/mail && make"
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 </code> </code>
  
-2. Define the default mailbox where all system messages are sent.+2. Tell sendmail where to deliver root's mail to. 
 <code> <code>
-jexec "ioc-${JAIL_NAME:?}" /bin/sh "cd /etc/mail && make"+jexec "ioc-${JAIL_NAME:?}" vi /etc/mail/aliases
  
 </code> </code>
  
 +On the first page, find the lines like this...
 +<code>
 +# Pretty much everything else in this file points to "root", so
 +# you would do well in either reading root's mailbox or forwarding
 +# root's email from here.
 +
 +# root: me@my.domain
 +</code>
 +
 +After that, insert a new line like this...
 +<code>
 +root: administrator
 +</code>
 +
 +3. Generate the aliases.db file and anything else that's required.
 +<code>
 +jexec "ioc-${JAIL_NAME:?}" /bin/sh -c "cd /etc/mail && make"
 +
 +</code>
 +
 +4. Enable sendmail features.
  
 <code> <code>
-jexec "ioc-${JAIL_NAME:?}" sysrc sendmail_enable="NO"+jexec "ioc-${JAIL_NAME:?}" sysrc sendmail_enable="YES"
 jexec "ioc-${JAIL_NAME:?}" sysrc sendmail_outbound_enable="NO" jexec "ioc-${JAIL_NAME:?}" sysrc sendmail_outbound_enable="NO"
 jexec "ioc-${JAIL_NAME:?}" sysrc sendmail_submit_enable="YES" jexec "ioc-${JAIL_NAME:?}" sysrc sendmail_submit_enable="YES"
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 </code> </code>
  
 +5. Start the sendmail MTA service.
  
 <code> <code>
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 I need to be able to view messages on my workstation using a normal mail reader. The messages I receive will be actioned and then deleted. I don't need the clever folders that IMAP provides, so I'll just use the POP protocol to access the mailbox.  I need to be able to view messages on my workstation using a normal mail reader. The messages I receive will be actioned and then deleted. I don't need the clever folders that IMAP provides, so I'll just use the POP protocol to access the mailbox. 
  
-Initially I just want one mailbox for all notifications from the various devices across my LAN. This can easily be configured by creating a normal Unix user on the mail server box. They don't need to be able to log in, but the normal passwd and shadow files will store all the configuration we need for each mailbox. The root login and other system logins will be set to forward their mail to my special email address on the same host.+I will be using the //qpopper// service to provide simple POP mailbox access. 
 + 
 +1. Install the software 
 +<code> 
 +jexec "ioc-${JAIL_NAME:?}" pkg install qpopper 
 + 
 +</code> 
 + 
 +2. Configure the service. 
 +<code> 
 +jexec "ioc-${JAIL_NAME:?}" vi /etc/inetd.conf 
 +</code> 
 + 
 +Search for this section in the inetd.conf file, and add the last line shown... 
 +<code> 
 +# 
 +# example entry for the optional pop3 server 
 +# 
 +#pop3   stream  tcp     nowait  root    /usr/local/libexec/popper       popper 
 +pop3    stream  tcp     nowait  root    /usr/local/libexec/qpopper      qpopper -s 
 +</code> 
 + 
 +3. Activate the service. 
 +<code> 
 +jexec "ioc-${JAIL_NAME:?}" sysrc inetd_enable="YES" 
 +jexec "ioc-${JAIL_NAME:?}" service inetd restart 
 + 
 +</code> 
  
 ====== Set up Thunderbird to access the Mailbox ====== ====== Set up Thunderbird to access the Mailbox ======
 +
 +Select "Edit" then "Account Settings" from the menu.
 +
 +Select "Add Mail Account" from the "Account Actions" menu.
 +
 +<code>
 +Your full name: System Administrator
 +Email address: administrator@net.joynt.org.uk
 +Password: *****
 +Remember passowrd: checked
 +</code>
 +Configure manually...
 +
 +Incomming Server...
 +<code>
 +Protocol: pop3
 +Hostname: net.joynt.org.uk
 +Port: 110
 +Connection security: none
 +Authentication method: Normal password
 +Username: administrator
 +</code>
 +
 +Outgoing Server...
 +<code>
 +Hostname: net.joynt.org.uk
 +Port: 25
 +Connection security: none
 +Authentication method: No authentication
 +</code>
 +
 +Warning... I understand the risks
  
 ====== Credits ====== ====== Credits ======
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   * [[https://www.freebsd.org/cgi/man.cgi?query=rc.sendmail&sektion=8&n=1]]   * [[https://www.freebsd.org/cgi/man.cgi?query=rc.sendmail&sektion=8&n=1]]
   * [[https://lists.freebsd.org/pipermail/freebsd-questions/2006-April/120156.html]]   * [[https://lists.freebsd.org/pipermail/freebsd-questions/2006-April/120156.html]]
-  * [[https://logs.paulooi.com/setup-sendmail-smart-relay-in-freebsd.php]]+  * [[https://blog.andreev.it/?p=199]] 
 +  * [[http://freshmeat.sourceforge.net/projects/qpopper/]] 
  
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  • Last modified: 02-Feb-2025 16:12
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