Mail won't send with my user account
My main user account recently started having the problem of not sending email (I can, however, receive). When logged as Admin, I can send. Can this be resolved by purging or deleting a preference file?
(We have tried Disk Utility, setting up new user accounts in Mail.app, etc., to no avail).
Suggestions appreciated!
iMac, OS X Mavericks (10.9.5), otherwise, works fine