You should just be able to configure the outgoing SMTP server in Outlook to point at Telus for a @telusplanet.net email address.
http://business.telus.com/en/busines...n-any-computer
That should work from anywhere on the Internet.
I have a bunch of emails setup to forward to Gmail and for some I send out through Gmail as well (they allow it since when I set it up they do a confirmation email to confirm I control the email address I want to "send as"). Most I have setup as above to send out through the proper smtp server so my @shaw.ca comes through Shaw so it doesn't say "on behalf of Gmail".
https://gmail.googleblog.com/2009/07...s-without.html