ERROR: File upload failed

[aviestar]

Whe have a server with DirectAdmin on it and roundcube to

Now if whe try to send an email with an Attachment then we getting the next error: "File upload failed"

If we whant to delete messages where getting the next error: "Could not move the message"

Whe have checked the rights for the /tmp map and thats ok

Now is our question how to solve this problem

Whe have the next configuration:
Apache 2.2.8
PHP 5.2.5
DirectAdmin V1.31.5
Dovecot 1.0.13
Roundcube 0.1

Please let us know what to do!

Thanks!

[flosoft]

Is the Webserver able to write in tmp and logs?

[aviestar]

Other logs are being writed by the server only of roundcube not

[flosoft]

Check in the folder /logs/ of roundcube