On Wed, Nov 16, 2016 at 12:05 AM, Felix Natter wrote: > 501 Syntax error in parameters or arguments > 221 gmx.com Service closing transmission channel The problem is either in gmx.com or in Gnus. > Here is the reply that my mailer generated: That looks fine. Try using reportbug.debian.org with submission port instead of the SMTP port as the SMTP server instead. -- bye, pabs https://wiki.debian.org/PaulWise