Thanks for this info.Below is the email i got from vfs after submitting my passport.
Dear First Name,Last Name
Visa application, tracking ID No. 20191119CALA******** has been received at the Lagos OC VAC on 2019-11-19 08:14:09 PM GMT Standard Time and is on transit to the IRCC Office in Lagos OC ,for processing. Please note this is an auto generated e.mail. Please do NOT reply to this email.