On 2007/09/25 17:35, Rob wrote: > Since this is happening during the conversation with our inbound mail > server, I don't see how filtering connections between our inbound and > outbound mail servers would fix it.
>From what you say, it sounds like your outbound mail server sends mail to some host which carries out an on-the-fly relay test, is that right? If so, surely they only test the host *sending* the mail to them?

