Hi Steffen thanks for your reply.

I found that permissions of some folders are different than others… After chmod all permissions to the same go= permissions, it works.

No matter what happens to generate different permissions for only this one account. Because all other accounts are correct.

I will have a look at this from time to time. As soon it not happens agains this thread is solved.

On Mon, 16 Feb 2015, Christian Vielhauer wrote:

I try to delete the folder „test" from Thunderbird 31.4.0 (Win), Webmail (Sogo 2.2.16), or Mail 8.2 (Mac Yosemite), but I am not able to delete in this account. Nevertheless I am able to create new folders. These new folders are not deleteable, too.

What's the returned description sctring, if you try to delete the folder manually via telnet?

dovecot 2.2.9 on Ubuntu 14.04 LTS 64-bit

In /var/log/mail.{err,log} I cannot see any errors.

What does Dovecot log? It usually logs to somewhere else.

In another account it works without any problems. (create and delete folders)

Steffen Kaiser