Re: sendmail relay
From: Dereck Martin (damartin_at_gurus.homelinux.org)
Date: 11/30/03
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Date: Sun, 30 Nov 2003 11:31:32 GMT
the second day I got my sendmail up and running my logwatch email came
into my account and said... the same thing, just a diff IP addy.
logically, I assume its a spammer with a massive mailer that cycles
through ip address hoping to find a site that will deliver his worthless
email to someone. as long as you don't have ur .conf setup to accept
internet hosts u'll be fine.
On Sat, 29 Nov 2003 20:14:07 +0000, atse wrote:
> Thanks, I see.
> What I am concerned is that the machine has enabled anonymous to attempt to
> send email through my server. As long as the rejection of relay has been set
> by default, I will feel save.
>
> Atse
>
> "ynotssor" <"ynotssor"> wrote in message
> news:3fc82ffd_1@corp.newsgroups.com...
>> "atse" <dunggaze@yahoo.com> wrote in message
>> news:SnVxb.88011$X2W1.55994@news04.bloor.is.net.cable.rogers.com
>>
>> > I was confused with the end part of the 1st record "we do not relay"
>> > and the next "relay=[210.106.36.47]", which is the same IP relay. I
>> > thought this person should have sent out the email through my server.
>> > And I found this occured many times that someone tried to relay their
>> > emails through my email server. How can I prevent someone from
>> > relaying their emails? Thanks
>>
>> You don't seem to understand that the email is *not* being relayed. The
> log
>> entries you posted indicate that. Since you top-posted I'm not going to
> take
>> the trouble of fixing it to show you again.
>>
>> As long as your machine is connected to the Internet with an SMTP server
>> listening on port 25 (or any port for that matter) with no other
>> restrictions or filters, anyone in the world can connect to that port and
>> attempt to relay. Your server is correctly configured to reject such relay
>> attempts, and the log entries prove it.
>>
>> If you want to stop such relay attempts then unplug the box from the
>> network. It's that simple.
>>
>>
>> tony
>>
>> --
>> use hotmail for any email replies
>>
>>
>>
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