I have Exchange Server 5.5 on Win NT SP5. We had an open relay on the server before I started working here. Someone started spamming through it, so I closed the relay. Now, I have remote users on dial up that can no longer send mail. The only way I have been able to figure out is to get them a dial up account and use the SMTP server from the ISP. A lot of ISP's don't allow this or are stopping it. We use Citrix Metaframe, but it is too slow on dial up and does not allow the users to work on mail offline. I know there has to be a solution. There are way too many companies out there that have remote users. Can anyone help me with some suggestions?