Problem with php mail function bouncing emails back to postmaster.

A server I manage hosts around 200 sites each owned by different webmasters.  A number of these have form to mail style scripts.  A small problem is that the mailserver appears to be receiving emails from these scripts as   When an invalid email address is given on the form these bounces are going back to

I was asked to fix the scripts to ensure that the bounces go back to the $from field.  Here is a quick fix.

Append -f $to to the mail() line…  For example change


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