We have an Exchange 2k server using mail essential on a different win2k adv server to filter email. Telnet into my exchange server port 25, when I try to send send an email a specific email address (not all) I get an "Unable to relay for abc@xxxxxxx" Please help. Thanks The preceding e-mail message (including any attachments) contains information that may be confidential or constitute non-public information. It is intended to be conveyed only to the designated recipient(s). If you are not an intended recipient of this message, please notify the sender by replying to this message and then delete it from your system. Use, dissemination, distribution, or reproduction of this message by unintended recipients is not authorized and may be unlawful.