On Wed, 26 Feb 2003, Dan Brotsky wrote:

> Yes, exactly, you understood quite clearly.
>
> Keep in mind that the "treat authenticated IPs as local hosts" setting
> introduces only a very, very small security risk (especially if the
> timing is set small, around 15 seconds).  So there's not what I would
> consider a pressing need to turn it off.

I think "security risk" would be a misnomer. The only possible negative
result of this is that, once the user has logged in via POP (or APOP) they
could relay mail through your box. If someone is able to sniff the
password (impossible with APOP) they could relay mail through your box
from anywhere (by first loggin in via POP). The legnth of the setting
would not influence this much, as a spammer could cimply use a script to
re-check via POP each time before sending.

POP before relay is a common approach for many servers, and is not likely
to cause much trouble. Just be sure your users have decent passwords (non
dictionary words, at least one letter and one punctuation mark). This is
much easier said than done, as every user wants their cat's name as their
password...

--
Joe Laffey              |  Want to convert subnet masks between different
LAFFEY Computer Imaging |  notations, or figure the number of IPs in a block?
St. Louis, MO           |  Whatmask-It's FREE - www.laffeycomputer.com/wm.html
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