how is possible I improve the mail server in ispconfig to protect. I have best much mail that I get of me itself how loose I this thanks
the problem is that heaker can burgle simple and then send mail of [email protected] to [email protected] gladly I for this soltion will see. thanks
hi Falko what I mean is that I have come back to 1 that heakers somehow heaks the mail system, and then mail to send mails I've had severals of [email protected] [email protected] to come. So I get mail from myself ...... I hope you understand
This is the normal behaviour of mailservers as specified in RFC and has nothing to do with hackers. The email protocol does not specify a sender address verification for emails delivered to local accounts. This does not mean that your server is a open relay. You might be able to add some verification for this by e.f. using SPF records in your dns server and postfix setup and there are also a lot of UCE configuration options in postfix where you can restrict the senders. But be careful that you do not deny any valid mail deliveries. http://www.postfix.org/uce.html
