RBL problem. Also blocking OUTGOING mail!!!

G

GoranTornqvist

Verified User
Joined
Sep 13, 2004
Messages
58
Location
Stockholm
Hello,
Yesterday I activated RBL´s in exim and it seems to work fine.

I have one problem though that I'm trying to understand.
My customer is sending mail thu our outgoing smtp server, same server as DA, and the mail is blocked by the DSBL (dsbl.org) block list. The error message comes from OUR server, same as the outgoing smtp server.
First I was, **** are we listed there or what :)
I queried the database and couldn't find any of our servers there thank god.
So I came to the conclusion that 1 or more of the 24 e-mailaddresses he's trying to e-mail is on DSBL, or rather the IP that the MX is pointing too, could that be a correct assumption?
If so, is that really how it should work?
In my mind our server should only block incoming e-mail and not outgoing e-mail, isn't that the correct way to do it or am I missing the logic here?

Thanks for your help...

edit: is there any post configuration that should be done after activating RBL´s. Like adding the localhost and our subnet (192.168.110.0) to the whitelists?
 
Last edited:
Found the problem.

HIS computer is listed on DSBL...:P

Is it possible to disable RBL on outgoing mail if the user is authenticated? Or is there a security consideration I should think of before doing this?
 
Whitelist DOES override anything else.

There are two considerations:

1) you must be using the spamblocker version 2 of exim.conf for whitelisting to work.

2) you must NOT whitelist any domain name on the server; if you do anyone can spam using a from address for that domain (and yes, it gets found and happens quickly).

Jeff
 
Hello,
Another spam/rbl related question :)

I noticed that my one of servers IPs is listed on spamcop.
Im trying to find out why, probably because a customer has an open html form that spammers use or something.

BUT: this causes outgoing mail sent from the server to be blocked by the server itself :)
I've put the server´s IP on the whitelist_hosts list now, since in my mind the local server should always be able to send out it's mail as long as the user is authenticated, right?
How have you guys configured your servers?

Sorry for all the questions but I'm quite new on this RBL stuff :)
 
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