It would probably be much easier to help you if you just stated exactly what data was being fed to mail() when it fails (try to make a simple case). In fact, just determining that might help you determine if the problem actually has anything to do with mail(), or something else in the code. Jeremy
Mário_Gamito <[EMAIL PROTECTED]> wrote: Hi, I have this class for sending mail, which worked until PHP 4.2.3 Since 4.3.0 it stops functioning. No error message. The mail is simply not send. I've searched everywhere and found no explanation for this behaviour. Any help would be appreciated. Warm regards, Mário Gamito <snip>