Running Exchange 5.5 on Windows NT 4.0 We are in the process of setting up our Standby Mail Relay Server. This is our contingency Plan should our Primary Mail Relay Server fail. Where could we find information on how to set up Message Transfer Agent (MTA)? Any documentation on the step by step Please let us know. Thanks CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential information and privileged information. Any unauthorized retention, review, printing, copying, disclosure or distribution is prohibited. If you are not one of the intended recipients, please contact the sender by reply email or phone, destroy all copies of the original message and keep the information contained here confidential.