Customers created via the Customer Portal do not trigger an email verification

In affected versions of Jira Service Desk Server and Data Centre, it was possible to create customers with fake email addresses via the Customer Portal. This is now resolved with email verification.

Affected versions:

• version < 3.16.13
• 4.0.0 ≤ version < 4.5.3
• 4.6.0 ≤ version < 4.7.0

Fixed versions:

• 3.16.13
• 4.5.3
• 4.7.0