Vernon,
> A while back, i set the $sa_mail_body_size_limit to undef to combat
> emails with large jpeg and pdf attachments, well not large but larger
> that the 200*1024 limit. These messages were detected under this
> setting. When attempting to unlearn (sa-learn -D --ham (or --forget)
> {message}), it returns:
> [16026] info: archive-iterator: skipping large message
> Forgot tokens from 0 message(s) (0 message(s) examined)
I believe the sa-learn only applies the size test if a file name
containing a message is passed as argument. If a message is fed
on stdin, the test does not apply. Considering the relative
infrequent use of sa-learn compared to regular mail checks, it
should not be too problematic to feed any size mail to sa-learn.
> I've been using Amavis (then amavisd-new) and spamassassin long enough
> to realize that i need to re-educate myself of the proper techniques,
> hence the original question. Been doing ALOT of reading - many
> different opinions and trying to get the most optimal configurations to
> handle anywhere from 15k to 60k messages per day - small but still
> important.
>
> Does anyone have suggestions on the optimal message size limit or will
> the default 200*1024 suffice.
I use the setting:
$sa_mail_body_size_limit = 420*1024;
which is just below the size used by MS mailers when they chop
a large message into several partial messages (which sometimes
gives SA a hard time), and is as large as still practical.
Note that since amavisd-new 2.6.3 with SpamAssassin 3.3.*
message larger than the limit are still passed to SpamAssassin,
but truncated. This gives us much better protection against
large-message spam than before.
Mark
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