🚀 go-pugleaf

Richard Clayton <richard@turnpike.com> wrote in article
<6eVBosBS5doyEA2N@turnpike.com>...

> >Is there any way of stopping connections from the SMTP client if I'm
> >connecting to the POP3 server? 
> 
> turn off the SMTP server

I can't do that - The software is an email router, so other machines on the
LAN may be trying to talk to the SMTP server in order to send mail out onto
the internet (or to other machines on the LAN).

I can prevent connections from the Internet, but there are occasions where
this isn't desirable, so I also need a secondary way of preventing the
Demon SMTP client talking to my SMTP server.

> >Would it be better to reject any connections which send 
> >'HELO xxxxx.mail.demon.net' ?
> 
> no - if you believe that people will deliver to your A record then you
> should believe that they will lie about their identity in HELO messages

This doesn't actually matter. I know the HELO message is virtually
meaningless. But hardly anyone is going to lie about being
xxxx.mail.demon.net, if that means that their connection gets rejected...

Paul