On Tue, 4 Mar 2003, Johan Louwers wrote:
check against spam-blacklist-server if
19.168.0.103/yoshi4184.myip.org is a trusted mail relay server.
Blacklists have lots of problems, as most list readers know. They
can be overly-broad, or else too narrow.
check if 192.168.0.102 is allowd to send in name of @Yoshi4184.MyIP.org
This requires extensions such as RMX.
check if Yoshi4184(_at_)Yoshi4184(_dot_)MyIP(_dot_)org is a correct account at
@Yoshi4184.MyIP.org
How do you check this? For example, Yahoo and all M$ Exchange servers
do not verify recipient addresses at RCPT TO: time.
step 5)
if all is ok accept mail.
You need textual analysis somewhere in the mix. Blacklists are reactive,
overly-broad or too narrow. Distributed checksum clearinghouses are
easily fooled by small changes to messages.
I'm not saying blacklists and DCC are useless; just that they need to be
used as part of a broad-spectrum approach.
--
David.
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