I needed to configure each Email Pull Job in the Aplication. Now it works with the Emails.
Best posts made by jensbee4
RE: ESPOcrm not sending mail, SSL error
Someone from the EspoCRM Forum discoverd that i need to enable smtp auth. With this i can send mails.
Background for not enabling smtp auth:
We use Office365 as Mail System. Because we run some Apps in our cloudron i marked the Server as trusted host in the office365 exchange system. With this all the apps can send Mails without entering Mail Server data.
Topic is solved for me.