[horde] Horde webmail login problems

[Aniruddha]

Hi,

Initially Horde webmail appears to be working fine, but when I log out
and try to login again I ge the following error message:

> Warning: fopen(/tmp/horde.log) [function.fopen]: failed to open
> stream: Permission denied
> in /var/www/localhost/htdocs/horde/horde-webmail/pear/Log/file.php on
> line 216
> 
> Warning: Cannot modify header information - headers already sent by
> (output started
> at /var/www/localhost/htdocs/horde/horde-webmail/pear/Log/file.php:216) in /var/www/localhost/htdocs/horde/horde-webmail/imp/redirect.php on line 59

Who has an idea how I can solve this problem?

Regards,

Aniruddha