You need to set your logs directory to be writable by apache. I also think you are supposed to be using the users@lists.roundcube.net list for these types of questions.
Mark
Nathan Monk wrote:
*Hi all*
*Got this all installed but when I send an email I get this message.
The email is still delivered but not sure what this is saying.*
*Warning*: fopen(./logs/sendmail): failed to open stream: Permission denied in */Users/triplex/domains/webmail.isystems.co.nz/public_html/program/steps/mail/sendmail.inc* on line *252*
Kind regards
Nathan Monk