The signature must be separated from the remaining text. The established form is »-- « (two dashes followed by one space). Then the various E-mail programs and Newsreaders can properly interpret the signature. (Source: Wikipedia)
Please remember to include an German-language version of your signature.
Note: In addition, please bear in mind the separation of private and professional addresses in your signature. Please indicate whether this is your private address or if you are acting as a member of the University.