SendmailWithoutQueueAliases

Lets say you want to be able to create new queues without having to touch your sendmail configuration. This how-to will allow you to send a mail to [=queuename@rt.example.com] to Correspond to tickets, and [=queuename+action-action-action@rt.example.com] to work those tickets via email You will need to set [=Set($UnsafeEmailCommands,1);] in your RT_SiteConfig.pm if you wish to take full advantage of this. Read the perldoc documentation of rt-mailgate for full details on using EXTENSION with rt-mailgate.

This howto assumes you have a dedicatd domain for RT configured in sendmail. We'll use rt.example.com.

• First add a rt3 user to receive all mail directed to RT. This is so we can have a custom .procmailrc for RT.

adduser rt3 -g rt3

• In /etc/mail/virtusertable add the following lines:

@rt.example.com     rt3+%1
+*@rt.example.com   rt3+%1.%2

• Rebuild your map files in /etc/mail

make -C /etc/mail

These virtusertable entries redirect all mail for the domain rt.example.com to the rt3 user. Using "plushack" (known here as EXTENSION) we can tell rt-mailgate what queue we're working with. As a bonus, we use a period as a delimiter on the back-end for separating the queue name from the list of actions. End users won't see the period in email addresses, nor should they use them.

• Create a .procmailrc in the rt3 user's homedirectory containing the following:

# Uncomment VERBOSE and LOGFILE for debugging, they're helpful at times.
 #VERBOSE=1
 #LOGFILE=$HOME/.procmail.log
 LOCKFILE=$HOME/.procmail.LCK
 ARG1=$1
 EXTENSION=`echo $ARG1 | awk -F. '{ print $1 }'`
 SUFFIX=`echo $ARG1 | awk -F. '{ print $2 }'`
 
 
 # if no list of actions, default action is correspond
 :0
 * ? test -z "$SUFFIX"
 |/opt/rt3/bin/rt-mailgate --extension queue --action correspond --url http://rt.example.com/
 
 # Otherwise, if we DO have a list of actions, run with them.
 :0 E
 * ? test ! -z "$SUFFIX"
 {
   :0
   |/opt/rt3/bin/rt-mailgate --extension queue --action $SUFFIX --url http://rt.cexample.com/
 }
 

• Notes

Configure your RT_SiteConfig.pm Set($rtname,'rt.example.com');, Set($Organization,'rt.example.com'); and your [=Set($RTAddressRegexp,'@rt\.example\.com$');] to the same catch-all domain in virtusertable. I also turn on [=Set($ParseNewMessageForTicketCcs,1);] so that RT auto-assigns people in the To:/Cc: address fields when someone opens a ticket via e-mail.

• BUGS

Mail sent to aqueuethatdoesntexist@rt.example.com will vanish, without an answer.