[CentOS] Postfix question: How to reject email with a certain subject header

John R Pierce wrote:

> 
> The problem with that approach is that its global to the server.    I 
> dislike putting filtering rules like that in the system, and prefer to 
> do them on a per user basis, hence my postmailrc suggestion (except I 
> don't know if CentOS uses postmail as the delivery agent for postfix)
> 
> 

I don't believe it does.
At least not with a standard postfix configuration.