please recommend sendmail references/books

[Tom Mitchell]

On Wed, 26 Nov 2003, Brian Fahrlander wrote:
>     Options:
> 
>     A lot of people have a mahine inside the NAT network to be the
> mailer.  Not too much tougher- the firewall will have to pass port 25
> traffic to that machine, that machine will have to have a name/ip that
> meshes with the local network, not the net, and you'll have to turn on
> the 'masquerading' lines (there's 2-3 of'em) and THEN you're set.

If you are inside a dynamic DNS NAT isolated universe make sure that
outgoing mail has a From:/Reply-To: line that works the way you
expect it to for all your users.