Client Authentication

[Lena at lena.kiev.ua]

Jerry <jerry at seibercom.net> wrote:

> > > How about refusing to
> > > relay mail from addresses in a good DNSBL?
> > 
> > Bad idea. Legitimate users connecting from dynamic IP-addresses is normal.
>
> I disagree. There is no legitimate reason a user cannot use a bonafide
> ISP to send mail.

The talk is about RELAYING mail sent with authentication
when legitimate users travel and connect from another ISP.
When you send mail from a mobile, should your relay (you use Gmail)
block you because you connected from a dynamic IP-address?