I have built a basic e-mail form, but it will only send to a yahoo account. I can get it to send to a pop3 domain account like mark@neowav.com or a qwest account. It doesn't matter whether I go online using horde or use download with express. The email just doesn't get there. But yahoo receives it without a problem. Am I missing a required field? EXAMPLE: $mail_to = "$recipient_email"; $mail_from = "$your_email"; $mail_reply_to = "$your_email"; $mail_headers = "From: $mail_from\r\nReply-to: $mail_reply_to\r\n"; $mail_subject = "$your_name has sent you an email"; $mail_body = "Hi there"; mail($mail_to, $mail_subject, $mail_body, $mail_headers); Thanks, Mark __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more http://tax.yahoo.com