16 characters

I am using a modified version of drush that comes preinstalled with quickstart environment. When I use the following:

drush qc all --domain=dev.entropay.com

I get the following error message:

'--domain' must be less than 16 characters long, for mysql user name to work.

using something like this:

dev.example1.com

I realise that this is a mysql related error but I am guessing this could be solved by truncating the username to less than 16 characters using drush?