Symptoms

1. One of customers started backup with mail notification using Customer Control Panel.

2. At the same time another customer started backup with mail notification using Customer Control Panel.

3. Customers received mail notifications where in 'From:' header in both messages is set to mailbox of one customer.

Cause

The behavior is caused by software issue #PPA-1269. The fix is included in MU #7.

Resolution

Update PA to the latest version:

/usr/local/ppa/bin/ppa_update --install-updates