[Koha] (no subject)

Dear community, Our Fundamental library mail server and koha located on different servers. Such mail server we use sendmail program on linux ubuntu 12.04 and (we have mail account kohaflib@flib.sci.am) We use Koha 3.12.05 Tarball on Ubuntu 12.04. We want to use our mail server for sending notices to Koha patrons . How can we configure Koha to send email? Best regards, Araik