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

Discussion in 'Installation/Configuration' started by nokia80, Jan 5, 2010.

  1. nokia80

    nokia80 HowtoForge Supporter

    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
     
  2. till

    till Super Moderator

    Please describe your exact problem.
     
  3. nokia80

    nokia80 HowtoForge Supporter

    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
     
  4. falko

    falko Super Moderator

    I'm sorry, but I don't understand your problem... :confused:
     
  5. nokia80

    nokia80 HowtoForge Supporter

    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
     
  6. till

    till Super Moderator

    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
     

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