On 6/30/2006 11:08 PM, Ross Boylan wrote:
To clear up an ambiguity in my original:
On Fri, 2006-06-30 at 19:19 -0700, Ross Boylan wrote:
Does a machine that is not part of my domain qualify as a client?
Suppose my MTA is contacted by a dial-up IP for somewhere.com (not my
domain), and that I do want to accept such mail.
The human client sending the mail works for somewhere.com, not my
organization. I'm not talking about the case of a roaming user who
really is in my domain. The mail is external in all senses; I just want
to accept it for the same reason I accept email from anywhere on the
internet. They could be a spammer.
Anyone from somewhere.com sending mail directly to your MXes are taking
their chances with being looked up in DNSBLs. Anyone trying to do so
these days should be well aware of that. Telling SA that the MX is
internal tells it to look up these people, who may be spammers as you
said, in DNSBLs.
As Matt Kettler best said in a post tonight, internal hosts aren't
*intended* to have mail sent directly to them from humans at
somewhere.com. They should really use their own MSA.
Daryl
