A listowner here has the following line in her header * FILTER = UCX_SMTP*@*,POSTMAST@**. ad,om-corp*@*,_TRANSFER_@* and she got the following when she did a put statement: Warning: you have not specified any "PW=" keyword in the list header. With this setup, no password is required to make changes to the contents of the list. The following problems have been detected in the list header: * Filter= UCX_SMTP*@*,... Error: Invalid parameter value. Choose one from the following (without the quotes): "Also", "Only" or "Safe". PUT operation rejected, old list remains unchanged. Anyone knows whats wrong? matt larson, information services, umab, 100 n greene st, baltimore, md 21201 [log in to unmask] 410-706-8424 410-706-4191 (FAX)