Another http redirect question

The first condition does more or less what the default http-to-https code does. Are you using this iRule in addition to another iRule?

when HTTP_REQUEST {
    switch [string tolower [HTTP::host]] {
        "mail.domain.com" {
            HTTP::redirect "https://[HTTP::host][HTTP::uri]"
        }
        "exchange.mail.com" {
            HTTP::redirect "http://www.domain.com/page.html[HTTP::uri]"
        }
    }
}

Though I might add that the URI "/page.html[HTTP::uri]" doesn't really make sense. If the request URI was "/foo", then you'd redirecting them to "/page.html/foo".