Check_MK Werk 4042: Fix missing From address in synchronous SMTP notifications

ID: 4042 Title: Fix missing From address in synchronous SMTP notifications Component: Notifications Level: 1 Class: Bug Fix Version: 1.4.0i2 If you use the new synchronous STMP devlivery for emails and do not specify an explicity From address, then the From address would be empty. This has been fixed.