At 10:36 AM -0800 11/5/03, Global Homes Webmaster wrote:On 11/05/03 at 10:28, Global Homes Webmaster wrote:
> On 11/05/03 at 10:37, [EMAIL PROTECTED] wrote:
> > See: <http://abuse.easynet.nl/dynablock.html> Your mail to > > greenbuilder.com or one of its hosted domains ...
200/8 is LACNIC (Latin America) space, which is riddled with open proxies. It's not particularly surprising that a 200.x.x.x address would be blacklisted.
I spoke a little too soon, sorry. 200.65.106.171 is a LACNIC address (prodigy.net.mx), but in this case it's listed in dynablock because it's in a block of dynamically assigned addresses -- i.e., it's a dial-up. That being the case, your client should definitely be using his ISP's server(s) for outbound mail.
Ok... What do I do about those clients who use *US* as their ISP and who have legitimate business with latin america and china?
When they are sending mail from a machine with an IP address in some other place like that, they should do one of 4 things:
1. Send through a mail server on the network which is providing them that IP address, i.e. their access provider's mail server.
2. Use SMTP AUTH or POP-before-SMTP to authenticate to your server for sending.
3. Use the POP3 XTND XMIT extension to send mail over a POP3 connection.
4. Use some flavor of tunnelling to give him a presence on your network. I like SSH for this because it is a shallow sort of tunnel that needs explicit config per application, but more the various deeper sorts of VPN are also reasonable choices and easier on non-technical clients
How about those who are using our webmail server when they travel?
That should be a non-issue, since it is almost certainly the webmail server, not the client machine, that actually talks to SIMS.
--
Bill Cole [EMAIL PROTECTED]
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