What the hell am I doing wrong that I can not send mail to any @debian.org address?
SMTP error from remote mail server after end of data:
host master.debian.org [70.103.162.30]: 550 Administrative prohibition
None of SMTP servers I used is blacklisted and I haven't seen
problem with any other recipient than master.debian.org. Anyway it
would be great if I would know what this Administrative
prohibition means. After googling I found out that it might
be something bad in my headers, but nothing what would tell me how
to fix it...