After looking in the logs I found this, but don't know how to fix and maybe solve the problem.
/var/log/mail.err
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Internal error. Unable to parse e-mail address.
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Unable to get recipient-domain handlers from the database
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Internal error. Unable to parse e-mail address.
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Unable to get recipient-domain handlers from the database
Oct 2 19:00:11 puck qmail-local-handlers[18848]: mailbox: /var/qmail/mailnames/domain.com/info
Oct 2 19:00:11 puck dk_check[18849]: DK_STAT_NOSIG: No signature available in message
thanks in advance
/var/log/mail.err
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Internal error. Unable to parse e-mail address.
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Unable to get recipient-domain handlers from the database
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Internal error. Unable to parse e-mail address.
Oct 2 19:00:11 puck qmail-queue-handlers[18838]: Unable to get recipient-domain handlers from the database
Oct 2 19:00:11 puck qmail-local-handlers[18848]: mailbox: /var/qmail/mailnames/domain.com/info
Oct 2 19:00:11 puck dk_check[18849]: DK_STAT_NOSIG: No signature available in message
thanks in advance