Leider ist dies EMailadresse nicht mehr erreichbar.
Hier der Fehler:
This is the mail system at host ucs-1481.rm-netproject.intranet.
I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
email@example.com: host smtp.strato.de[22.214.171.124] said:
550 5.1.1 host ASPMX.L.GOOGLE.COM [2a00:1450:400c:c0b::1b] said: The email
account that you tried to reach does not exist. Please try double-checking
the recipient’s email address for typos or unnecessary spaces. Learn more
at https://support.google.com/mail/?p=NoSuchUser b3si7466927wrm.203 - gsmtp
(H-BADRCPT) (in reply to RCPT TO command)