Mail problem

PHP Version 4.3.2 I am having problems sending a large number of emails from a mail list held in a database. I don't belive that the database has anything to do with the problem. I have about 9000 addresses and can only successfully send about 2000 mails before the page say complete/done. Below is the code that I am running, no error messages are returned from the mail function, it just stops. About 2000 mails are sent OK. Anyone know what the problem is? Trevor $query_string = "SELECT DISTINCT email FROM [user]"; $result = odbc_exec ($odbc_connection, $query_string); $Message = "Mail Text"; $Index = 0; while (odbc_fetch_row ($result)) { $EmailAddress = trim (odbc_result ($result, 'email')); flush(); @mail ($EmailAddress, "Support", $Message); $Index++; echo ("<BR>Email Address: $EmailAddress"); // DEBUG echo ("<BR>ErrorCode: ${ErrorCode}"); // DEBUG echo (".........${Index}"); // DEBUG }