If you use the Quickmail block to send messages to your students from Moodle, your students may report that the return address shows as "noreply@moodle.vcc.ca." This is most likely due to the email display setting in your profile.
To fix this issue, access your profile preferences and change the Email Display setting from "Hide my email address from everyone," to either one of the other two options. Once changed, any messages sent by you using the Quickmail block should show your email address to the students.