Disculpa tu estas utilizando windows y es un servidor casero? y tienes coneccion con cantv?
por que a mi me funsiona bien de esta manera
Código PHP:
;;;;;;;;;;;;;;;;;;;
; Module Settings ;
;;;;;;;;;;;;;;;;;;;
[Syslog]
; Whether or not to define the various syslog variables (e.g. $LOG_PID,
; $LOG_CRON, etc.). Turning it off is a good idea performance-wise. In
; runtime, you can define these variables by calling define_syslog_variables().
define_syslog_variables = Off
[mail function]
; For Win32 only.
SMTP = mail.cantv.net
; For Win32 only.
sendmail_from = davidtorres@cantv.net
; For Unix only. You may supply arguments as well (default: "sendmail -t -i").
;sendmail_path =