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Again spam problems !!!

Discussion in 'General Discussion' started by Radio_Head, Mar 18, 2003.

  1. Radio_Head

    Radio_Head Well-Known Member

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    Anyone with a valid email could use the ip address of my dns as SMTP server and send email without problems and without password.

    Anyone !!!

    What I have to do to stop it ? Please help !!!
     
  2. Radio_Head

    Radio_Head Well-Known Member

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    I am using Group Mail plus .


    a) I insert the ip address of my box on SMTP mail server
    (without smtp authentication) .

    b) I insert 10 test email addresses to send a test message.

    c) I insert a false "From" emai for example usfo2i2werh@hotmail.com


    I send the message using bulk mode .

    My box send the messages !


    Is there any way to avoid this ; how to activate smtp authentication to avoid the problem above?

    Thank you!!
     
  3. rpmws

    rpmws Well-Known Member

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    humm ..I am wondering if exim knows about your incoming IP becuase you have been activly checking pop sessions ? can you use dial-up and dial up somewhere and test this?
     
  4. Radio_Head

    Radio_Head Well-Known Member

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    you are right . The problem is not there . I was able to send because I checked email before.

    Infact if I don't check email for 30 minutes and replicate the problem above I receive an ip denied permission error .


    Yesterday I had problem with an user because I provided him (about 1 month ago) a customized A Record .

    It was a big error , because using that A Record he was able to bypass all whm email restrictions I had set .
     
    #4 Radio_Head, Mar 18, 2003
    Last edited: Mar 18, 2003
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