Linux Email – How to Forward Root’s Email to External Address

I have a small server (Ubuntu 10.04) at my house and I would like to forward root's email to my gmail hosted domain to get security notifications and what not.

I ripped everything out and started from scratch and ran into some other issues.

I now have sendmail working in the sense that I can mail some@external.com and get the mail.

HOWEVER, adding an address to /root/.forward does not actually forward the message. I get the following in my logs:

Dec 22 14:04:37 batcave sendmail[4695]: 
       oBML4bAT004695: to=<root@batcave>, ctladdr=aburns (1000/1000), 
       delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30075, 
       relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (oBML4bJ9004696 
       Message accepted for delivery)
Dec 22 14:04:39 batcave sm-mta[4698]: STARTTLS=client, relay=[69.145.248.18],
       version=TLSv1/SSLv3, verify=FAIL, cipher=DES-CBC3-SHA, bits=168/168
Dec 22 14:04:40 batcave sm-mta[4698]: oBML4bJ9004696: to=<root@batcave.net>,
       ctladdr=<aburns@bresnan.net> (1000/1000), delay=00:00:03, xdelay=00:00:03,
       mailer=relay, pri=120336, relay=[69.145.248.18] [69.145.248.18], 
       dsn=2.0.0, stat=Sent (OK 01/D4-00853-216621D4)

You can see where my local sendmail instance accepts it then hands it off to my ISP, but with the wrong address (root@batcave.net).