sendmail: open-relay

[Jerry]

On Mon, 04 Jan 2010 14:33:54 +0100
Peter Ulrich Kruppa <ulrich at pukruppa.net> replied:

>> I just tried and received a "Relaying denied" response.
>> 
>> By the way, I noticed that you apparently do not employ SMTP
>> Authentication or offer STARTTLS on either port 25 or 587. You might
>> want to consider employing them. Then again, you could just install
>> Postfix. It is far easier to configure.  
>What exactly did you try, Jerry?

I used both the IP address and the domain name. Same results either way.

Go to: <http://www.checkor.com/> and type in your IP: 213.146.114.24
and you will notice that no errors are displayed.

Your server is accepting the "Mail From:" then refusing to relay the
mail. If you employed SMTP Authentication it would not even get that
far.


<quote>
220 pukruppa.net ESMTP Sendmail 8.14.3/8.14.3; Mon, 4 Jan 2010 15:39:34 +0100 (CET)
HELO ortest.checkor.com
250 pukruppa.net Hello www.no-ip.com [204.16.252.112], pleased to meet you
RSET
250 2.0.0 Reset state
MAIL FROM: test at checkor.com
250 2.1.0 test at checkor.com... Sender ok
RCPT TO: test1 at checkor.com
550 5.7.1 test1 at checkor.com... Relaying denied

RSET
250 2.0.0 Reset state
MAIL FROM:
501 5.5.2 Syntax error in parameters scanning "FROM"
RCPT TO: test1 at checkor.com
503 5.0.0 Need MAIL before RCPT

RSET
250 2.0.0 Reset state
MAIL FROM: spam at 213.146.114.24
250 2.1.0 spam at 213.146.114.24... Sender ok
RCPT TO: test1 at checkor.com
550 5.7.1 test1 at checkor.com... Relaying denied

RSET
250 2.0.0 Reset state
MAIL FROM: spam at 213.146.114.24
250 2.1.0 spam at 213.146.114.24... Sender ok
RCPT TO: test1 at checkor.com
550 5.7.1 test1 at checkor.com... Relaying denied

RSET
250 2.0.0 Reset state
MAIL FROM: spam at 213.146.114.24
250 2.1.0 spam at 213.146.114.24... Sender ok
RCPT TO: test1 at 213.146.114.24
550 5.7.1 test1 at 213.146.114.24... Relaying denied

RSET
250 2.0.0 Reset state
MAIL FROM: spam at 213.146.114.24
250 2.1.0 spam at 213.146.114.24... Sender ok
RCPT TO: "test1 at test.com"@213.146.114.24
550 5.7.1 "test1 at test.com"@213.146.114.24... Relaying denied

RSET
250 2.0.0 Reset state
MAIL FROM: spam at 213.146.114.24
250 2.1.0 spam at 213.146.114.24... Sender ok
RCPT TO: @213.146.114.24:spamtest at checkor.com
550 5.7.1 @213.146.114.24:spamtest at checkor.com... Relaying denied 

</quote>

-- 
Jerry
gesbbb at yahoo.com

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"You are slower than a herd of turtles stampeding through peanut butter."

	Anonymous