77803 Need help with Ensim Config.

Hi guys, I have a new Ensim server and there is a problem with the sendmail configuration. Many hosts reject the emails I am sending out, and the ones that DO accept the emails say this is the sender: UNEXPECTED_DATA_AFTER_ADDRESS_'AT'_SYNTAX-ERROR Now, this is NOT a problem in the headers settings from my PHP mailer but a settings problem in Ensim. The mailer worked before on a shared hosting account but since I went dedicated it is not good. I need a specialist. My site CAN NOT GO DOWN because of inexperience! If you are an expert, and you can advise me or assist me, go ahead. Leave me a PMB. That works far better than just a small quote and some text, because I get the full PMB message in my email, but no text that you add to your bid. Thanks for regarding this project. Quickjob