Editing Infrastructure Machines (section)

== email ==
This server hosts mail for johncompanies.com (mail.johncompanies.com). Sendmail 8.13.6/8.13.6 is listening on 69.55.230.2 port 25 for incoming mail. Relaying is allowed per /etc/mail/relay-domains
Other addresses (aliases) are defined per /etc/mail/aliases

The following active users have mail hosted on this server:
* dave
* linux
* support
* payments
* sales
* tech1
* info

Traditionally, mail is checked via shell apps (pine). qpopper (pop3s) is running to allow mail downloading. Checking mail in this way causes an opened INBOX in pine to lock read-only. For this reason, we tee incoming mail to support and linux to tech1.

Procmail rules are setup to filter spam and send text messages. They are enabled for info, support, linux, tech1, dave and can be found in ~/Procmail/, for example:
<pre># more ~support/Procmail/rc.emergency
:0c # use c only if you want to forward a copy and file the original later
* ^Subject:.*\<emergency\>
* ! ^Subject:\<re\>
  {
   :0h
   FROMANDSUBJECT=|formail -XFrom: -XSubject:

   :0fwh
   | /usr/local/bin/formail -I"Subject: " -I"To: pager@johncompanies.com" ; echo $FROMANDSUBJECT ; echo

   :0
  ! -t
  }

</pre>

control: <tt>cd /etc/mail; make stop</tt> (stop), <tt>cd /etc/mail; make start</tt> (start)

The following aliases are also in place:

<pre>debian:         linux
jobs:   info
careers:        info
#reboot:         6128102202@txt.att.net
#reboot:         8582298897@vtext.com
reboot:         pager
#pager: 8582298897@vtext.com
pager:  4158718324@txt.att.net
tech1on:  "| /usr/local/sbin/tech1on.sh"
tech1off:  "| /usr/local/sbin/tech1off.sh"</pre>

To change them, edit <tt>/etc/aliases</tt> and then run <tt>newaliases</tt>

Note on tech1: this address was setup as a read-only address to be mirrored on all email coming into support and linux. We set this up so we could easily check support mail via a pop client- popping email locks out the user in pine so checking support/linux directly via pop was not an option. When checking and responding to email that comes into tech1, care should be taken to make sure it is sent as/under an address other than tech1. This is cause tech1 is not monitored by support staff as closely as email to support/linux. Further, the tech on call may not be checking tech1. Lastly, because of the nature of the copying, you will sometimes notice certain automated email/notices are received 2x in support- this is because of/related to the tech1 mirror.

To enable it (on mail, run):

<tt>~support/tech1on.sh</tt>

To disable

<tt>~support/tech1off.sh</tt>

Or via email:

<tt>tech1on@johncompanies.com
tech1off@johncompanies.com</tt>