SA Max Message Size
Jason Burzenski
jburzenski at AMERICANHM.COM
Tue Apr 6 15:31:14 IST 2004
Do you think there would be value in making both options avaiable?
Max Spamassassin Size to Scan = 20000 (truncate to 20K and scan)
Max Spamassassin Size to Skip = 100000 (bypass spamassassin and process
using normal delivery rules)
Most corporate environments running MS probably have a 5-10MB attachment
limit (or similar). Has anyone ever seen a 5MB spam message? Would most
likely be far too expensive for a spammer to send out spam greater than 60K
or so.
I know this feature would be of great benefit to me as 90% of my FPs happen
to be messages with large attachments. Anyone else?
> -----Original Message-----
> From: Julian Field [mailto:mailscanner at ECS.SOTON.AC.UK]
> Sent: Monday, April 05, 2004 2:49 PM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Re: SA Max Message Size
>
>
> At 19:26 05/04/2004, you wrote:
>
> ># SpamAssassin is not very fast when scanning huge messages, so
> >messages # bigger than this value will be truncated to this
> length for
> >SpamAssassin # testing. The original message will not be affected by
> >this. This value # is a good compromise as very few spam
> messages are
> >bigger than this. Max SpamAssassin Size = 90000
> >
> >(don't know how I missed this stnd option)
> >
> >If I am reading this correctly, SA will still scan a 100000 byte
> >message but it will only scan the first 90000 bytes.
>
> Correct. I set this limit to 10 or 20,000 myself. Doesn't
> seem to radically affect the score and it's a whole lot faster.
>
> > By nature of the second sentence, wouldn't it be a good idea to
> > (have the option to) pass these messages unscanned rather than scan
> > 90K (or 30K which seems to be the new default) of a message that is
> > most likely not spam anyway?
>
> The average size of a spam message is growing. My
> "truncation" approach means you don't have to tweak it as
> spam gets bigger. I used to do it your way but my way
> produced better results, so I changed it.
> --
> Julian Field
> www.MailScanner.info
> Professional Support Services at www.MailScanner.biz
> MailScanner thanks transtec Computers for their support PGP
> footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654
>
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