Our situation is that a couple of managers sent out 30 or so emails in very quick succession, all with the same subject heading, to customers as a personalized after sales courtesy call. These emails had delivery receipts but none appear to have been delivered. Individual emails are coming through and being sent out without issue and our spam filter is working inbound only(just checked with our provider). Our email (Exchange 2003 /server 2003)is sent out via smart host smtp.btconnect.com. Is it likely that BT think this is spam? We were able to send out Christmas opening times last year in a similar way without any problems....any thoughts? Thanks..