note 18542 added to function.eregi

I'm not sure about "\." being the same as "." above. Anyway, the mentioned regex would not recognize .museum-names, and generally isn't future safe. Also, it doesn't verify that usernames and hostnames cannot start with "-._". I would recommend a more general (=future safe) expression and then instead check the hostname. An example: if( !eregi("^[a-z0-9]+([_\\.-][a-z0-9]+)*" ."@([a-z0-9]+([\.-][a-z0-9]+))*$", $mail, $regs) ) { echo "Error: '$mail' isn't a valid mail address!\n"; } elseif( gethostbyname($regs[2]) == $regs[2] ) { echo "Error: Can't find the host '$regs[2]'!<br>\n"; } Note: I had to split the regex for it to fit this note. Also note: The reason I'm using gethostbyname() and not getmxrr() or such is that getmxrr() doesn't work on Win2000/XP. -- http://www.php.net/manual/en/function.eregi.php http://master.php.net/manage/user-notes.php?action=edit+18542 http://master.php.net/manage/user-notes.php?action=delete+18542 http://master.php.net/manage/user-notes.php?action=reject+18542