Hi,
There's a couple of very large ISPs here in Argentina that have most of their
networks in various RBLs, including open proxies ones, mostly because of
captured machines on dynamic addresses.
Now, one of the things people do to avoid being identified as spammers is to
manually use their hotmail or yahoo accounts.
As I just witnessed a most innocent message hit by various RBLs, after
confirming the message was actually sent via webmail I noticed Yahoo and
hotmail are adding a sintactically valid trace header (Received:) stating the
IP address from where it received the message:
Received: from [200.63.133.111] by web12505.mail.yahoo.com via HTTP;
Fri, 21 May 2004 07:32:15 PDT
Received: from 200.63.133.111 by by12fd.bay12.hotmail.msn.com with HTTP;
Fri, 21 May 2004 13:34:55 GMT
Is there a reasonable way to avoid these headers from being parsed by the
RBLs if I decide I don't want to ban a volatile IP when it's used to send
webmail?
TIA
--
Mariano Absatz
El Baby
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I.R.S.: We've got what it takes to take what you've got!
