You can open relaying up by originating IP address. I don't remember
where it is in 5.5, because I'm an Admin Of Very Little Brain. I assume
that this server connects to you via a fixed IP address, or at least a
DHCP range from the ISP that would be able to narrow it down... Is that
what you're asking?
> -----Original Message-----
> From: Raul Rivera [mailto:[EMAIL PROTECTED]]
> Posted At: Thursday, August 30, 2001 01:43 PM
> Posted To: MSExchange Mailing List
> Conversation: Open-Relay
> Subject: Open-Relay
>
>
> I recently made changes to the IMS on my Exchange 5.5/SP 4
> server in order
> to resolve issues with open-relay. My server was being used
> (abused) by
> spammers.
>
> For those of you (if any) that might not know how to minimize
> spamming,
> the change requires selecting Routing Restrictions from the
> Routing tab on
> the IMS and then setting the check mark on Host and Clients
> with these IP
> addresses without specifying any real IP addresses (leave the window
> blank). This will force the IMS to verify that at least the source or
> destination email address is contained within the GAL.
>
> My problem is that I have another Exchange server within a
> different site
> which exchanges messages with my server via RAS and X.400 addresses
> (custom recipients). Since this other server uses my IMS to
> get messages
> out to the Internet and the users are not in my GAL, all
> internet-bound
> traffic is returned (NDRs) with error 550 - relaying prohibited.
>
> Is there a work around this issue without having to create
> these remote
> users within my GAL with delivery the an alternate address?
>
> TIA
>
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