eitanc on "[Plugin: WP Mail SMTP] Send all WordPress emails via SMTP - Not working"

I probably have the same issue.
I work with 0.9.3 (using SMTP) and wp 3.7.1

All worked fine up to 0.9.3, and the backup plugin I use, backwpup sent emails to me at the end of each backup, but now it stopped, on all my sites with the same configuration.

The self-test email of wp-mail-smpt works fine.