email server been hacked ?

[zxmax]

Hi all, this is driving me nuts, First of all i'm not really running exchange server , but runing a deerfeild mail server ,, my problem is , my email server keep relaying, and i'm not open for relaying at all, i even blocked sending any emails out .. even after that i look at the raw log and i find lots of things like:
----------------------------------------------------
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:36 -0500 Client session Connected
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:37 -0500 Client session <<< 220 sinamail.com ESMTP Service(Sinamail SMTPD) ready Thu, 27 Nov 2003 16:29:41 +0800 (CST)
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:37 -0500 Client session >>> EHLO mail.pcclick.ca
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:38 -0500 Client session <<< 250 SIZE 10240000
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:38 -0500 Client session >>> MAIL From:<bramble's@yahoo.com> SIZE=1070
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:38 -0500 Client session <<< 250 Sender <bramble's@yahoo.com> OK
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:38 -0500 Client session >>> RCPT To:<spick@sinamail.com>
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:40 -0500 Client session <<< 250 Recipient <spick@sinamail.com> OK
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:40 -0500 Client session >>> DATA
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:41 -0500 Client session <<< 354 Enter mail, end <CRLF>.<CRLF>
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:44 -0500 Client session <<< 250 Message accepted for delivery
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:44 -0500 Client session *** <bramble's@yahoo.com> <spick@sinamail.com> 1 1070 00:00:02 OK
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:44 -0500 Client session >>> QUIT
210.200.138.21 [00000478] Thu, 27 Nov 2003 03:33:45 -0500 Client session <<< 221 sinamail.com
SYSTEM [00000478] Thu, 27 Nov 2003 03:33:45 -0500 Client session Disconnected
-------------------------------------------------------------
How could it be accepted for delivery from a non local sender to a non local receipiant, Could that be some kind of hacking in into my server , if it is, can someone suggest a software that could resolve this problem

Any any suggestion will be greatly appreciated,

Thanks

 

[Marcs41]

See the FAQs pages about relaying and spam please

Marc
_{If 'something' 'somewhere' gives 'some' error, expect random guesses or no replies at all. Please specify details.
Free Tip: The F1 Key does NOT destroy your PC!}

 

[zxmax]

i took a look at that, but some of these domains are yahoo.com or hotmail, also even if i block their ip address, i noticed that they are still sending emails, (as shown in my first post)

Any thing else i should look at ?

Thanks again

 

[Marcs41]

They are using your server as realy, so double and triple check your settings.
There is nothing else to look at, but it has to be setup correctly.