Re: Do we need SMTP compliance?

> > > Pro:  Rejecting messages with errors in the SMTP commands will 
> > > eliminate most spam.
> > The Pro argument isn't true.
> Have a look at http://archive.iecc.com/article/spamtools/20050223008 
> or any page about greylisting. Even if the spammers' commands are 
> correct, other aspects of their SMTP implementations appear to have 
> certain defects.
no doubt.  but that doesn't mean that stricter checking will eliminate 
most spam.