Server: hMail Server 5.3.3-B1879 on Windows Server 2008R2
Roundcube 0.8.5 on IIS 7.5 / PHP 5.3.22 / MySQL 5.6
Basically everything working properly.
But just an issue on sending out attachment.
When I attached some files (under the size limit) and click the "Send Message" button,
the status change to "Sending message..." and then no response, but the mail has been sent properly.
I use Chrome Developer Tools Console to monitor, I can see a HTTP 500 Error while sending out the message,
but there are no error in the error log file....
I tried to change the execution time on PHP.ini and also the connection timeout on IIS,
but the problem still persists, please help...