Not Working with Plesk i need help :)

Replies: 0

Good evening, Thank you for helping me

I have a problem, I use the Plesk platform and my emails do not arrive. The emails only arrive internally and do not go to other mailboxes. I’ll show you my successful send email code: https://piratenpad.de/p/WYSdJFXS3VWDES

I hope you can help, but falls several logs may be needed I can happily try to send them