"Request Access" Feature in MOSS 2007
By default the request access feature is enabled for all the site collection and the reply-to address is set to the e-mail address of the user who entered the SMTP server name. If you want to use a different e-mail address, you can specify a different individual or group e-mail account to receive access requests by the foll way:
Home > Site Actions > Site Settings > Modify All settings > Advanced Permissions > Select Settings > Access Requests>change the email id you want them to recieve these emails.
If you want to turn down the feature, uncheck the box and say "ok"
Comments
Happy New Year !
Mazeltov