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Re: (OT) Mail got blocked because of SORBS/DYNABLOCK

On Wednesday 31 March 2004 04:01 pm, Gerry Doris wrote:
> > So my question basically, does changing SMTP server for his account
> > (using his
> > ISP SMTP server for example) help fixing this problem? If yes, why? if
> > the rule looks at the originating IP instead of the SMTP, any SMTP server
> > that he
> > uses will still trigger the rule, won't it ? And why does his other
> > account
> > (with different SMTP) does not trigger that some DYNABLOCK rule?
> >
> > Any help on this will be greatly appreciated.
> >
> > RDB
> I believe you will find that the DYNABLOCK rule will trigger if his
> originating IP is in a block assigned using dhcp by his ISP.  He can get
> around this by using his ISP's mail server to relay his mail.  This rule
> carries a large score.

This is what I don't understand. If his originating IP is what trigger this 
rule, how can changing his SMTP relay to the ISP's solve anything? He can use 
any SMTP server, but the originating IP will remain the same, right?

> In other words, these RBL's are based on the assumption that people in
> these categories can't be trusted to run their own mail servers.
> Experience has shown that they often misconfigure their servers causing
> others grief.  The belief is that they should be using their ISP's server
> instead.  This will avoid the spamassassin scores.
> It is also likely that your friend is violating his ISP's user agreement.
> These agreements often don't allow servers.  If his ISP does allow servers
> he might be able to get his ip removed from the RBL's but it will still be
> difficult.

I think I'm misunderstood. Right now, he is using *my* mail server, which is 
outside his ISP, to relay his mail. My mail server (edu domain) is configured 
to use SMTP authentication. This still triggers the rule, which baffles me, 
since the (newly configured) mail server is not in RBL, nor it's an open 

So you may be right that telling him to use his ISP's mail server instead will 
fix the problem, but I still don't understand why. Why should it be any 
different than using my mail server? Please enlighten me :)


Reuben D. Budiardja
Department of Physics and Astronomy
The University of Tennessee, Knoxville, TN
"To be a nemesis, you have to actively try to destroy 
something, don't you? Really, I'm not out to destroy 
Microsoft. That will just be a completely unintentional 
side effect."
                 - Linus Torvalds -

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