Re: [Security-Discuss] Problems of SPAM with Postfix

Thankyou for your help, but i still don't understand one thing: what is 
exactly an open relay? And is it a good thing to have one?
Thankyou for your help and for your patience...

Matt Parker wrote:

>On Tue, 2004-06-08 at 14:01, Tommaso Leonardi wrote:
>  
>
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>>
>>Good day list,
>>I'm not so sure I'm on topic, however I'm so desperate that I'll ask
>>your help.
>>I set up a little mail server NOT for personal use; I give mailboxes
>>to  20 or maybe 30 people I know, but I expect to have in three or
>>four month about 100 mailboxes. My biggest problem is the spam. I
>>didn't think the spam was a so big problem and I understimate it. The
>>result is that i found  more than 4000 massages in my mail queue to a
>>Yahoo server in the Est. I installed Spamassassin and Anomy Sanitizer
>>according to this tutorial
>>(http://advosys.ca/papers/postfix-filtering.html) but the problem is
>>still surviving.... I'm afraid to be in some black list because of the
>>thousand of spam massages i sent...is it possible? I considered also
>>the possibility to use smtpd SASL authentication, but i though that if
>>the other provider in the network don't use it, there must be another
>>solution....
>>
>>Please help me.....thankyou very much in advance and sorry if I'm off
>>topic,
>>
>>Tommaso Leonardi
>>    
>>
>
>Sounds like you might be running an open relay. Go here -
>http://www.abuse.net/relay.html - to test it.
>
>Also, you might want to think about using the blocklists at your end.
>http://www.securitysage.com has a good tutorial. I've found blocklists
>to be the only really effective way of blocking spam - especially the
>SORBS one that blocks all mail from dynamic IP addresses.
>
>Matt
>
>  
>
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