At 04:13 PM 2/24/2006 -0500, Ki Song wrote: >Question: On LISTSERV's SMTPL, do I need to create an account for >[log in to unmask] No. That's handled internally. So that's not the problem. The problem is that from your Postfix server's standpoint, the LISTSERV machine is refusing to let the Postfix machine open a connection. That suggests a firewall issue that someone on your end is going to have to figure out. What makes it odd is that (for instance) I can connect from outside your network. Nathan