[Elfchen]

Originally Posted by till

As far as I know, you can configure this in your php.ini file by adding additional parameters when php calls the sendmail command. So this is not a feature that can / must be implemented in ISPConfig

Then you should tell the users how to do that ...

you need to modify the php.ini (general php steering). inside php.ini you'll find the sendmail path for sending mail. These path you need to point to a script which did what I've requested or anything else. Maybe if you want to add something do it like this:

#!/usr/bin/perl

open(MAIL, "| /usr/lib/sendmail -oi -t") or die "can't open sendmail";
while () {
    print MAIL $_;
}
print MAIL qq(
---
I add some text to the mail now ...
);
close MAIL;