Specifies the sendmail command to use when sending email
notifications. Only one Sendmail or SMTPServer line
may be present in the mailto.conf file. If multiple lines
are present, only the last one is used.
SMTPServer servername
Specifies a SMTP server to send email notifications to. Only one
Sendmail or SMTPServer line may be present in the
mailto.conf file. If multiple lines are present, only the
last one is used.
Subject subject-prefix
Specifies a prefix string for the subject line of an email notification.