[afnog] HOW can I stop outgoing spam

[Phil Regnauld]

saleh ali (saleh.shihab) writes:
> 
> 
> Ok . 
> When I watch log file I found a abnormal behavior .
> 
> the behavior is my mail server domain is sustech.edu and I Found some email send to outside and the sender is out of my domain (edwarpor20 at yahoo.com.hk) AND i very sure that my mail server is not an open relay , see the following Lines:

	You can't be 100% sure until you test it yourself from the outside, from
	an untrusted IP address:

telnet myserver 25
HELO machine.i.come.from
MAIL FROM: <externaluser at otherdomain.com>
RCPT TO: <someoneelse at yetanotherdomain.com>
DATA
Subject: test open relay

testing open relay
.

> This Lines from my server log file 
> 
> Mail 132a1e9e79c_WE7L_149d-1 sent successfully to vcgw1.ocn.ad.jp [125.170.92.208] for [air_ship at highway.or.jp] apparently from edwardsoper20 at yahoo.com.hk (size= 1314 bytes)
> 
> while the SMTP OUT it should be just from emails that inside my domain. 

	Do you have the log lines before and after this line ?  So we can see where
	the mail originates from ?

	Phil