[luau] sendmail via ppp

[Warren Togami]

Please consider using your ISP's SMTP server for outgoing mail... mainly for
two reasons.

1. Security: You shouldn't be running Sendmail unless you really know what
you are doing.  You could inadvertently make yourself an open relay...
although if you setup properly you could allow relaying for only your local
machines and disallow port 25 connections from the Internet... that would be
fine.
2. Many other mail servers wont allow SMTP connections directly from ranges
of known dial-up, DSL and cable modem segments because they are usually a
large source of spam.  You may have a lot of rejected outgoing mail if you
send directly from your IP address rather than your ISP's SMTP server.

----- Original Message -----
From: "Patrick Kennedy" <patrickjkennedy at hotmail.com>
To: <luau at videl.ics.hawaii.edu>
Sent: Saturday, March 30, 2002 1:33 PM
Subject: [luau] sendmail via ppp


>
> Okay, I configured my old 120MHz AT&T with Redhat 7.2.  Even got PPP and
> fetchmail to work.  Downloaded 275 email letters from ISP.  It definately
> works!
>
> But now I want to send email out too.  I figure that I need sendmail for
> that - unless there is a better idea.
>
> I have "Sendmail for Linux," which is a great book.  A few good m4 script
> examples.  But, the command "mailq" show stuff not heading out.  I'm not
> using local DNS - I'm using my ISP's nameservers in resolv.conf.  So I
guess
> my ISP cannot reference my local sendmail server without MX statements?
>
> As for the sendmail.cf, I am working with the m4 masquerading or
nullclient
> configurations.  Does any one know the best way to send email thru ppp
> connection?  Thanks for any ideas.
>
>
> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
> Patrick Kennedy
>