Hello,
We were unlucky enough to be chosen as a spam relay site. As such, we are switching our bastion host over to exim, but we have run into some difficulties. The scenario is as follows:
Inbound internet mail is delivered to the bastion host. The bastion host delivers it to our internal mail server, via our firewall proxy. Currently when the bastion host receives an inbound message, it gets the following error: lowest MX points to local host, message frozen. Our only MX record points to the bastion host.
We would like to continue receiving mail on the bastion host, which will relay it to our internal mail server. We also want to stop all unauthorized spam relaying.
We would like our internal mail server to forward all outbound e-mail to our bastion host for final delivery.
Has anyone implemented such a scheme in exim? Is it even possible to implement such a scheme with relay control?
Any pointers are greatly appreciated.
Thank you,
Brad
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