"Steve Sobol" <sjsobol@JustThe.net> wrote in message
news:MPG.26f56b9158a8f6df989a2d@news.justthe.net.. .
> In article <i6g3li$mvv$1@speranza.aioe.org>, cssutto@suttonmachine.com
> says...
>
> > I had changed nothing in my msmtprc.
>
> It's not a problem with your setup.

Actually, it IS a problem with your setup. You thought you could send mail
from a dynamic IP address (dial-up, DSL, etc.). You can't. Thank spammers
for that.

You need to relay your mail via your carrier's outbound mail server.