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Re: [cobalt-security] qube sendmail config question to prohibit spamming
- Subject: Re: [cobalt-security] qube sendmail config question to prohibit spamming
- From: Gerald Waugh <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 4 Oct 2003 08:29:34 -0400 (EDT)
- List-id: Mailing list for users to address network security on Cobalt products. <cobalt-security.list.cobalt.com>
On Sat, 4 Oct 2003, Wim Dieke wrote:
>
> I'm running a qube3 with standard configuration and had a spamrun last night from somebody near by.
>
> What is the situaton:
> 1) my ISP does DHCP IP assignment. The netmask used is 255.255.254.0 so 512 possible ip adresses belong to subnet the qube is in.
> 2) Sendmail relays mail for every pc in that network by default is my guess
>
> somebody in the same subnet did a spamrun on the qube. I disabled sendmail for the time beeing and would like to know if i can configure smtp in a way that only my own ip adress can use this service.
>
Not sure on a Qube3 but look at...
/etc/mail/access and see who can relay.
It's probably something like 1.2.n
maybe setting that to just your IP will help
Of course the GUI may change it when you make changes.
Gerald
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