On Wed, 4 Feb 2015, NAI WEI YEK wrote: > or im doing wrong way? how can i check smtp server logs? The SMTP server is not a part of Horde, but the server you have configured to pass the messages to. Something that is running on your host on port 587, e.g. exim, postfix, qmail, sendmail, smtpd, ... -- Steffen