Mail () problems - Need help!

I''ve a php script that gets e-mail addresses from a MySQL db and then using the mail() sends the same message to 100+ recipients. I tested the script twice. FIRST TEST. (1) I commented out the mail() routine. (2) I looped to get the e-mail addresses. (3) I echoed the e-mail addresses on the screen. It worked fine (displayed 136 e-mail addresses) and fast! SECOND TEST. (1) I uncommented out the mail() routine. (2) I used my own e-mail address as the recipient in the mail(). It was supposed to loop to get the e-mail addresses, display them on the screen, and send me an e-mail every time (136 times). It loaded very slow (loading indicator). Finally it displayed "url not found" with the name of the script file. And, I got no e-mails. Is there a conflict between php mail() and the mail server when multiple e-mails are involved? Thanks! Anthony F. Rodriguez (sbwi@bellatlantic.net)