note 18637 deleted from function.mail by didou

Note Submitter: Louis@ewens.com ---- On a Solaris OS host, Sendmail would always set a return-path header of the host name rather than the To: address. Putting in an optional 5th parameter of "-fuser@returnpath.com" had no apparent effect. Rather than going the tedious genericstable alteration to Sendmail, Sendmail will allow the -f option to take effect if certain security parameters are set in key files: 1. Add the account your web server runs as to the /etc/mail/trusted-users (Solaris 8) or /etc/mail/sendmail.ct (Solaris 7) file, one account per line. If it doesn't exist, create it. You should have a dedicated account for your web server. 2. Add to or create the file /etc/mail/relay-domains and add all the domains you want to send from, one per line. After making these changes Sendmail should allow PHP to set the -f option as long as the domain name in the email address was listed in the relay-domains file and PHP/Apache is running as a trusted user.