Let us say that my domain is purenet.com.eg.... and the user created his Non-existing email account say: test..... then the Non-exist user is [EMAIL PROTECTED] is that OK?? Now, that users using his Outlook express can send emails to any user on purenet.com.eg
The first thing you need to know is that anyone in the world can send out mail using "[EMAIL PROTECTED]" if they have a mailserver they can send mail through. If I tell my mail client that I am "[EMAIL PROTECTED]", my mail client will send out the mail.
The second thing you need to know is that anyone in the world can send E-mails *to* your users. To some people this is obvious, but there are a lot of people that don't really understand that. Anti-relay tools prevent unauthorized outgoing mail on your mailserver, but anyone can still send unlimited incoming E-mail.
and also to any domain arround the internet....
That, however, could be a problem.
Most likely, you are using "Relay for Addresses" (which is usually a GOOD setting). That just means that you are allowing your customer to send mail through your mailserver.
After your reply, I sellected : Relay for local users onlyOn my SMTP setting.
Nooooo... that's what got you listed in the spam databases in the first place. That setting makes you an open relay (anyone at Ipswitch reading this? that needs to be moved to "Advanced Options", or a pop-up box should warn the user, or SOMETHING).
Only "Relay for Addresses" or "No Mail Relay" will prevent you from being a spammer.
If you want to make sure that none of your customers can send mail from a "test@" account, you would have to use "No Mail Relay" (which really means "Relay mail for anyone who uses SMTP AUTH").
-Scott
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