Re: Slightly OT: Greylisting success or failure stories?

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On Fri, 2005-02-04 at 11:16 -0600, Aleksandar Milivojevic wrote:

> Not all users have luxuriy of having SMTP server doing authentication on 
> port 587 (plus, some ISP might block that one too).  Plus you need 
> support in mail client to connect to port other than 25 (not all support 
> it).
> 
We've beaten this to death but we authenticate SMTP with SASL AuthD (as
do many ISPs). This does not require additional ports.

> Webmail is nice, but not all people like it.  It is especially 
> inconvinient for people who use POP3 to get their mail.  Again, in this 
> hypothetical situation, you are forcing legitimate sender's to deal with 
> your spam problem (just like with TDMA, maybe even a bit worse).

Roaming users aren't the issue. This pertains exclusively to a third
party contact that happens to be traveling in a banned area and needs to
send email. In that event, when that occurs, I'll deal with it.
Meanwhile, 100% of the email that we have ever received from servers in
China and Korea has been spam. We have no business reason to accept mail
from either area. We also refuse email from dynamic IPs. They should use
their ISP's SMTP. We ban mail from exploited servers and open proxies. A
large MIS service company (a former vendor) has apparently been
infected. Presumably, a computer on their LAN has become a zombie and is
sending spam to the corporate mailing list. That's banned as well.

We're not an ISP. My machine - my rules. End of story.
________________________________________________________________________
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http://www.TQMcube.com


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