I can contact my host and see if I can obtain the necessary information you outlined. However, would any of your fellow technical support engineers know or may have learned of or acquired the necessary script(s), SMTP server settings, and/or php mail() function calls that Yahoo webhosting makes available so one can use your UE extension? I am assuming that someone, somewhere may have come to you and inquired with you about this same issue. I cannot be the only one that has runned into this brick wall?