Blacklisted - ReadList.com

10 msg	postfix relaying
2 msg	Restrict sending external mail depending on LDA...
2 msg	monitoring emails for a particular user
1 msg	loops back to myself with antivirus gateway...
2 msg	cyrus and postfix issue...
2 msg	Deny messages to local mailing lists
2 msg	Translation delivery error messages
3 msg	Why smtp instead of relay?
2 msg	Chroot Timestamps
18 msg	relay access denied
7 msg	Question about Successful Mail Delivery Report
6 msg	clamav question
2 msg	Find/Replace Text, Strip Graphics

Blacklisted
\ Rocco Scappatura (16 May 2007)
. \ Ralf Hildebrandt (16 May 2007)
. \ Rene van Hoek (16 May 2007)
. \ Rocco Scappatura (16 May 2007)
. . \ Ralf Hildebrandt (16 May 2007)
. \ Rocco Scappatura (16 May 2007)
. . \ Rene van Hoek (16 May 2007)

3 msg	Charset problems
4 msg	[urgent] how to use remote mail server ?
1 msg	[Re: sasl problem]
2 msg	off-topic?
7 msg	smtpd_milter question
1 msg	Off-topic: Linux distro compare site

Subject:	Blacklisted
Group:	Postfix-users
From:	Rocco Scappatura
Date:	16 May 2007

Hello,

I have several SMTP relay server postfix-based. One of this has been
blacklisted by UCEPROTECT(r)-Network.

On UCEPROTECT it is suggested to:

"Grep the logs (last 8 days) on your server for following expression:
"UCEPROTECT-Policy Server"

Now you should be aware of the cause of the problem and be able to take
preventative measures not to get listed again in the future."

I have done and I have found that the guilty message has been sent by an
MS Exchange server which use my server as relay.

But in fact I have no understood why that message cause the blacklisted.

After, I have read a little about the argument I get 2 possibily cause:

1. The bessage is a backscatter so the problem is that the mail server
that originated the message bounce to non-local email address (so I have
contact its administrator and tell him to face the trouble)

2. A spam trap was relayed trough my mail server by the same
originating mail server of 1. (What I have to do to solve this problem?)

I would like to know what is the bug (the 1. or the 2.? Or it can be
another one?)..

Thanks in advance

rocsca