>He called me and told me the name of the software package they put in place is called TrendMicro Spam filter.
>
>But here is an interesting thing, he indicated that they have not made any changes to the software since installation. I was getting the email until recently. So he asked me to ask you did you all change where you send email out of recently (within last few months) or make a change to the way you send email responses out.

The only change is a new OS on the server which doesn't affect anything in regards to our SMTP server. Our SMTP server is not within the OS. IAC, it works for most of the people. So, it's something external.

However, another small change we did was to use temporary a return address of info@levelextreme.com. Maybe, some mailer are rejecting anything beginning with info as the return address. IAC, if this would have been the case, you would have started to receive back your emails since last night.