Habe seit einigen Tagen das Problem, dass Email an hotmail.com nicht mehr zugestellt werden. Folgendes sagt die Rückantwort:
Undelivered Mail Returned to Sender
<XXXXXXXX@hotmail.com>: host mx1.hotmail.com[65.55.37.104] said: 550 OU-002
(COL0-MC3-F11) Unfortunately, messages from 46.38.247.45 weren't sent.
Please contact your Internet service provider since part of their network
is on our block list. You can also refer your provider to
Troubleshooting. (in reply to MAIL
FROM command)