E-mail validation

[linuxnewb]

States the e-mail address [e-mail] is not valid.

<?
include ("connect.php");

echo "Your e-mail address is $_POST[email]"; //display [e-mail]
echo "<br>";

if (eregi("^{[a-z0-9-]+(.[a-z0-9-]+)@[a-z0-9-]+(.[a-z0-9-]+)(.[a-z]{2,3})$",$email))} {
$query="INSERT INTO email (email) VALUES ('$_POST[email]')";
if(!mysql_db_query($dbname,$query,$link_id)) die(sql_error());
echo "success in database entry.";
}
else {
echo "The E-mail address entered is not correct<br>";
echo "<a href='enteremail.php'>return to previous screen.</A>";
}

ISSUE RESOLVED

[TheDefender]

$email = $_POST['email'];
if(!eregi("^[a-z0-9]+([_\\.-][a-z0-9]+)*". "@([a-z0-9]+([\.-][a-z0-9]+))*$",$email) ){
// Bad Email

} else {
// Good Email

}