Re: [cobalt-users] SMTP Problems!

[Brent Sims <brent@xxxxxxxxxxx>]

On Mon, 5 Jun 2000, Benito Camela so wrote:

} "The message could not be sent because one of the recipients was rejected by
} the server. Server Response: '550 joeblow@xxxxxxxxxxxxxxxxxx denied'.
} (Account: 'user@xxxxxxxxxxxxx', SMTP Server: 'www.ourdomain.com', Error
} Number: 0x800ccc79)."

	I believe you need to either set the sendmail daemon on
gateway machine to masquerade for the other machines or set 
the gateway machine up as a Smart Relay Host. Masquerading is 
the easiest solution however the problem is that I don't have an
RaQ3 here so I don't know if the necessary function was compiled
into your sendmail.cf but I'm guessing they were not as they're
certainly not installed on our RaQ2s. 

	But you can configure the sendmails on the other machines in
the network to use the gateway machine as a 'smart relay host'. This
is pretty easy to do. Just open the /ect/sendmail.cf file and scroll
down till you see the line that reads:

	# "Smart" relay host (may be null)
        DS

	And put the domain name of the gateway machine right there
after the DS, ie: DSfoo.com 

	I'm guessing the GUI might break this during some
configuration changes (I've only been playing with these things a
couple of weeks). While there is a master copy on my RaQ2s
which I'm also guessing the GUI uses as a template which could be
edited thereby eliminating this problem, doing so will probably
break the warranty.

	Quite simply, what is going on here is that nice tight email
servers are seeing the messages as being relayed because they are
being relayed. They're ordinating on one machine but being processed
by a second machine. Thus you either need to use the gateway machine
as a Smart Host (like ISPs do - which is pretty much exactly what
you are doing) or Masquerade the mail in such as way as to, well,
masquerade the relay enough to where it won't be seen as a problem
by the recipient machines.

	Peace be with you,
	
	Brent
	
	Brent Sims
	WebOkay Internet Services
	http://www.WebOkay.net
	Brent@xxxxxxxxxxx
	(719) 595-1427 (Voice/Fax)