Hi, I'm using a mailhost on my site in order to be able to send out emails. When a user registers into the site I want to validate the email address given to confirm, as much as is possible with a not too detailed function, that the address given is valid. Reading through forums I've concluded that all I need to do is to attempt to send a confirmation or test mail to the given address, if an SMTPSenderRefused error is received then I can assumed that there is something wrong with the mail addrees... the python script I'm using is simply: import smtplib try: Anvil_Page.MailHost.send("This is a test", 'ruth@ffff.com') except smtplib.SMTPSenderRefused: get_transaction().abort() return "Invalid email address: please press your browser's='back' key and correct it" else: return 0 The only problem is that when I try to test this script the zope login screen comes up and regardless what passwords and logins I try to enter, including the admin one, I end up with the error: "You are not allowed to access SMTPSenderRefused in this context" Any idea what I've got wrong?