how is possible I improve the mail server in ispconfig to protect.

[nokia80]

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

[till]

Please describe your exact problem.

[nokia80]

the problem is that heaker can burgle simple and then send mail of info@blblbl.bl to info@blblbl.nl gladly I for this soltion will see.
thanks

[falko]

I'm sorry, but I don't understand your problem...

[nokia80]

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 info@xxxx.xx info@xxxx.xx to come.

So I get mail from myself ......

I hope you understand

[till]

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