During the last week I worked together with Florian Heckmann and Nicolas Teleki from 1&1 to solve the email problems I had. Luckily those guys took my problem serious and started to find a solution. Especially Florian Heckmann worked hard to find the problem and he could finally eliminate the problem on Friday. Many thanks!

Since then all email functions are running fine again. I send out a mass mail to 1.500 user who had registered at Mambers.com the last weeks and did not yet get an activation email. The same will be done for the users at Mamboportal.com tommorow. However if you still have problems, please contact us.