Hi Thomas,
DP>> I don't use selective download filters much, but presumably The
DP>> Bat uses the LIST command to get the sizes of messages,
DP>> wouldn't it be better if The Bat only downloaded the headers
DP>> first if the message was fairly large, otherwise downloading
DP>> the entire message for small messages.
> It does not matter whether you use them much or little; once you have
> set up one, the headers will be downloaded first.
> In order to check whether a message is small or big, TB needs to
> download the headers.....
Hmmmm, are you sure? I thought TB needs the headers to check against
the selective download filters, but size...is it in headers? I know
nothing about servers, but I guess TB get the sizes of messages with
a server command (perhaps LIST as David said), not from headers.
DP>> Otherwise the overhead involved of downloading the headers, then
DP>> downloading the message again complete with headers defeats the point
DP>> of selective download in the first place. Or am I missing something.
> You are. How can TB select if it doesn't download the headers first?
That's what I thought, too. In order to check the headers against
the selective download filters, TB needs the headers first.
But I think what David suggested is for TB to d/l everything unless
the size of a particular message is large. If, after comparing
headers with selective download filters, a message is not wanted, TB
either discards it (if already downloaded), or doesn't d/l it (if
not, for its size is large). This would be a little more efficient
if one's selective download filters would normally match very few
messages (i.e., most messages would need to be downloaded after
checking against the selective download filters).
Is that what you mean, David?
If yes, my opinion is the efficiency gained may be outweighed by the
complexity introduced, and it defeats the purpose of selective
download. As said, it would be more efficient ONLY when your
selective download filters would match very few messages. In that
case, you're better off setting up normal Incoming filters instead
which either delete such mail or send it to trash. That's what I do,
since my mail server has stopped most spam already.
selective download filters is designed to check headers before
downloading the bodies. When a large number of messages are not
wanted (a much-spammed account, e.g.), especially on a slow
connection, it could save much time. Let's leave it that way.
--
Best regards,
Ming-Li
Using The Bat! 1.45 S/MIME under Win2k
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