Hi, Folks, i have the next problem in my Sugar CRM v4.5, when i compose a email and i send it, y receive the following message of error:

Fatal error: Call to undefined function: mb_encode_mimeheader() in /var/www/html/crm/include/Localization/Localization.php on line 307
What's the problem?, how can i resolve it?

Cheers
Mario Delzo
Contact Center

Note: I have a server e-mail with other program and a own domain. (MDaemon)