By default, cron will email the owner of the account under which the crontab is running.
The system-wide crontab is in /etc/crontab runs under the user `root'
Because root is used widely, I'd recommend adding a root alias to your /etc/aliases file anyways. (run 'newaliases' after)
The normal way to structure this is for root to be aliased to another user on the system, e.g. for me I'd alias 'root' to 'phil' (my user account) and alias 'phil' to my external email address.
If you have a specific user cron that you'd like emailed to you on output, you can use /etc/aliases again (providing you have superuser access) to redirect the user to another email address, or you can use the following at the top of your crontab:
MAILTO="email@domain.com"
If mail should be sent to a local user, you may put just the username instead:
MAILTO=someuser
If you need more information see crontab(5) by running:
man 5 crontab
I think I jumped the gun asking this question. I went ahead and gave it a try with an unimportant account. I simply copied files from the old server new directory to the new server new directory, and my mail client downloaded them without any issues. Problem solved!
Best Answer
Here's a quick and dirty head start. No error checking, and it doesn't actually "move" anything as is.