Am 06.11.2014 um 09:42 schrieb Heiko Schlittermann:
SMTP error from remote mail server after initial connection:
host mx01.kundenserver.de [212.227.17.191]: 554-kundenserver.de (mxeue006) Nemesis ESMTP Service not available
554-No SMTP service
554 invalid DNS PTR resource record, IP=212.80.235.156
Update: 11:39 CET
1und1 got contacted and is working on a solution for this problem.
best regards,
Marius