2 questions: sql upgrade and email

Question 1:  I am running the 7.6 SQL version of WWF.  Can I just download and install the 7.7 over the top?  I have no mods.  Should I back anything up before the updagrade?

Quesiton 2: I am using the built in IIS SMTP server on same server I run my WWF and website.  The SMTP works fine for all other programs, except WWF.  I have my settings as "CDOSYS" and "rickenbacker.mydomain.com" for the smtp server.  I have retested my SMTP using a Telnet session and I do received the email externally, but when WWF tries to send an email, it fails and the event log shows:

"Message delivery to the remote domain 'mydomain.com' failed for the following reason: Unable to deliver the message because the destination address was misconfigured as a mail loop."

Any ideas?  I love this program, but I just cannot get the email portion to work with WWF.  Thanks for all your efforts.

-boRg- wrote: 1. Just overwrite the old files. 2. Not really sure the problem, check with your hosting company, it could be a problem with the email address you are trying to send to.

Thanks.  I'll get the update downloaded and installed.

-boRg- wrote: You need to re-enter the details of your SQL server into the SQL_server_conection.asp file in the admin area.

I got it working.  I opened the backed up copy of SQL_server_connection.asp in notepad, looked at my old settings, then edited the same file from the new version and it came right up.

Thanks again for all your effort.