Headers/ Emails out of RT

Hi there;

The system is rt-3.6.1/mysql 5/apache2/exim/mod_perl2
Is there a way to change the “Sender” tag in emails out of RT to be the
queue address instead from the default apache user … any one any ideas??
the From tag is set correctly as the queue address however the Sender
tag is always defaulting to apache user
also how safe ist to remove the RT-Originator mail header, I can’t see
the purpose of it and the staff here do not wish their mail addresses in
the mail headers …
Any pointers would be appreciated.