> SMTP to Lotus/Notes gateway. Such gateways *can* work just fine, but > if they are misconfigured the user will wind up with unrepliable mail. > This is not necessarily true. When SMTP is not the native language of a mail system it is not a given that there will be enough fields left in the MUA header to appropriately handle Reply-To and Error to. Microsoft Mail (the one we use) is an example. Mail needs to be routed within MS Mail long after the SMTP gateway is done with it. In that process, there is one Reply-To/'From' address. Given the choice of using the SMTP envelope and handling errors right and using the Reply-to (with its sequence of rules) and handling replies right, MS made the correct (yay, for once) choice and chose SMTP envelope. And no, the gateway cannot know which messages will bounce. They've promised to provide more function in their mail package soon, but it's NOT a gateway problem. Why do I go into all this detail? As listowners, we can point people to the DUALHDR option so the headers get copied into the BODY of the message (thanks, Eric). At least that way they will have full headers to see what the appropriate addresses are. In the case of MSMail, the DUALHDR option is NOT necessary because the MUA has a similar option. That's enough marginally relevant stuff for now. Joe Moore > -jj