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in /var/log/maillog i have the following message: Code: Feb 3 13&#58;46&#58;26 1oopis sm-mta&#91;12447&#93;&#58; i13BkQuO012447&#58; <jack@oopis.ro>... User unknown Feb 3 13&#58;46&#58;27 1oopis sm-mta&#91;12447&#93;&#58; i13BkQuO012447&#58; lost input channel from &#91;82.76.104.39&#93; to MTA ...
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  1. #1
    Just Joined!
    Join Date
    Feb 2004
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    20

    Sendmail - How can I block this? - I think it is spam.


    in /var/log/maillog i have the following message:

    Code:
    Feb  3 13&#58;46&#58;26 1oopis sm-mta&#91;12447&#93;&#58; i13BkQuO012447&#58; <jack@oopis.ro>... User unknown
    Feb  3 13&#58;46&#58;27 1oopis sm-mta&#91;12447&#93;&#58; i13BkQuO012447&#58; lost input channel from &#91;82.76.104.39&#93; to MTA after rcpt
    Feb  3 13&#58;46&#58;27 1oopis sm-mta&#91;12447&#93;&#58; i13BkQuO012447&#58; from=<maria@natali.cz>, size=0, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=&#91;82.76.104.39&#93;
    
    Feb  3 13&#58;56&#58;12 1oopis sm-mta&#91;12607&#93;&#58; i13Bu9uO012607&#58; ruleset=check_mail, arg1=<mike@gto.net.om>, relay=&#91;82.76.104.39&#93;, reject=553 5.1.8 <mike@gto.net.om>... Domain of sender address mike@gto.net.om does not exist
    Feb  3 13&#58;56&#58;12 1oopis sm-mta&#91;12607&#93;&#58; i13Bu9uO012607&#58; from=<mike@gto.net.om>, size=0, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=&#91;82.76.104.39&#93;
    
    Feb  3 14&#58;08&#58;14 1oopis sm-mta&#91;12797&#93;&#58; i13C8EuO012797&#58; <jane@oopis.ro>... User unknown
    Feb  3 14&#58;08&#58;14 1oopis sm-mta&#91;12797&#93;&#58; i13C8EuO012797&#58; lost input channel from &#91;82.76.104.39&#93; to MTA after rcpt
    Feb  3 14&#58;08&#58;14 1oopis sm-mta&#91;12797&#93;&#58; i13C8EuO012797&#58; from=<brent@asu.ro>, size=0, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=&#91;82.76.104.39&#93;
    As you can see, all says that relay=[82.76.104.39].

    To protect my server, i put in /etc/mail/access the following line:

    82.76.104.39 DISCARD

    But, this do not change nothing.

    Please HELP!

  2. #2
    Linux Guru
    Join Date
    Oct 2001
    Location
    Täby, Sweden
    Posts
    7,578
    Don't worry about it - that just shows that sendmail already has detected it and blocked it. Thus, you don't need to do anything more about it.

    The reason your solution didn't work was because it tells sendmail to discard the message, which it already had decided to do since it had detected that the message was bogus.

  3. #3
    Just Joined!
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    Feb 2004
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    I think that the messages only messages with invalid address are rejected, but what about when the address is valid?

    I do not want to relay spam.

    Can I block this?


  4. #4
    Linux Guru
    Join Date
    Oct 2001
    Location
    Täby, Sweden
    Posts
    7,578
    Most distros come with mail relaying already denied by default. To relay mails, the connection must come from one of the authorized networks that are listed in /etc/mail/access.

  5. #5
    Just Joined!
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    Feb 2004
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    20
    Thank's for your help.

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