> -----Original Message-----
> From: Greg Allen [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, June 08, 2006 12:05 AM
> To: [EMAIL PROTECTED] Apache. Org
> Subject: RE: is there a way to block email coming from
>
>
>
> >
> > However, the ISP dynamic address tests *do* belong in the MTA RBL
> > checks. The fraction of legitimate emails received from dynamic-IP
> > hosts is vanishingly small compared to the tens or hundreds of
> > thousands of compromised Windows boxen spewing spam and viruses...
> >
>
> Sorry to poke in on the thread, but I disagree.
>
> Most small start-up businesses buy business class DSL these
> days with 1-5
> fixed IP addresses. They often have small firewalls, anti-virus, most
> everything they should have. They probably don't have a full
> time IT staff.
Relying on email for communication and NOT having somone on staff to handle email problems is just bad business.
>
> There are a lot of small businesses on these legitimate
> business class DSL
> lines with fixed IP addresses (which they pay extra for) who are very
> frequently incorrectly listed as "dynamic" IP addresses. The
> vast majority
> of these small companies are NOT spammers.
>
It is then the customer's responsibiliy to inform the ISP about any block. Because we all know the ISPs don't bother to check RBLs for their IPs being listed. Then if the ISP doesn't work to get it fixed, they suck and should not be considered when the contract is up.
Also almost all ISPs allow customers to relay email thru the ISP's server. I had to do this once when AOL decided to block my ISPs section of static IPs for some unknown reason. Took all of about 5 clicks to solve.
> To expect every small start-up to be on a major Internet
> carrier with a T1
> is simply not reality these days. To block on dynamic is
> asking for a lot of
> trouble. It also is a pay-to-play mentality. If a start-up
> business can't
> afford a T1 then they can't send email?
If they are that small, then perhaps they shouldn't be hosting their own email?
>
> If you are a system admin and you flat-out reject email that shows on
> various error ridden "dial-up" lists as "dynamic" IP address
> for a company,
> other than your own, you should be fired IMO.
Well you are intitled to that opinion. But whitelisting in the Sendmail access.db would make you an admin worth keeping around. DUL and Dynamic DSL Pool RBLs are extremely helpful. ANd I'm sure if I turned them off, my phone would be ringing off the hook. Instead of teh once a quarter call for whitelisting someone.
Chris Santerre
SysAdmin and SARE/URIBL ninja
http://www.uribl.com
http://www.rulesemporium.com
