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MrOzone <[EMAIL PROTECTED]> wrote on 2008-Apr-17:
> I have a server setup for users on the outside to send email through it,
> but im trying to configure it so that everyone needs to do smtp
> authentication except 1 ip range.  Is this possible?

By default, courier is set up the way you want.  You didn't tell us
which version of courier on which OS, but assuming you didn't change
anything, it probably handles SMTP AUTH correctly.  Look in the 'esmtpd'
file in your courier 'etc' directory (normally '/etc/courier' or
/usr/lib/courier/etc') and find the lines which says "ESMTPAUTH" and
"ESMTPAUTH_TLS".  That's where you set which types of authentication you
allow under which circumstances.  There are examples in the file which
you can follow.

Do *NOT* set "AUTH_REQUIRED" if this is a publicly facing mail server.

To allow an ip address range, use the file in the 'smtpaccess'
directory.  Read the 'makesmtpaccess' man page to see the syntax.  You
want to set something like

192.168.1       allow,RELAYCLIENT

This will allow the entire 192.168.1.0/24 network work to connect and
relay mail without authenticating.

HTH

Jeff Jansen
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