Is this intentional/redundant?
; The path to a log file that will log all mail() calls. Log entries include
; the full path of the script, line number, To address and headers.
mail.log = /usr/local/apache/logs/phpmail.log <---------
; Log mail to syslog (Event Log on Windows).
mail.log = /usr/local/apache/logs/phpmail.log <---------