"The recipient was detected looping within the message transfer service" I have been working fine with E2K using the default smtp server and a created smtp server. Now after adding a new virtual server and configuring a new Smtp connector to work with this new VS to have certain setting for a specific domain space., I started getting NDR with the above message for the domains specified by this smtp connector. Why is this happening..? CONFIDENTIALITY NOTE: This e-mail and any attachments thereto contain protected and confidential information intended for the sole use of the individual or organization named above. If you are not the addressee or an authorised agent for delivering it to the addressee, you are hereby warned the use, reproduction, distribution or dissemination of this document and any attachments is categorically prohibited. If you have received this message by error please notify the sender immediately by returning the message, and delete this copy from your system. Thank you for your understanding and cooperation.