Problems with spacers

Hi, if have a “funny” problem. In my text of the templates I have spacers.
For example: Herzlich Willkomm en beim Newsletter …
It should be: Willkommen
There is no spacer in the template text of the program, no spacer in the database, just when I send the mails.
It is in the text, the footer…
Never had this problem in my other Newsletters.
I have the latest version 3.3.2 (but it was the same with the previous version) and php 5.6
Maybe somebody had the same problem and has a solution?
Thank you and regards