Spam with certain size has spam score of 0

Shawn Iverson shawniverson at
Mon Jun 13 12:19:43 UTC 2022

The setting you need is in MailScanner.conf and is "Max Spam Check Size" .

On 6/13/22 05:13, PenguinWhispererThe wrote:
> Anyone has ideas about this?
> On Thu, 9 Jun 2022 at 16:37, PenguinWhispererThe 
> <th3penguinwhisperer at> wrote:
>     Hi all,
>     I am using Mailscanner with Mailwatch.
>     In Mailwatch I see messages are marked as OK while I'd have
>     expected it to be caught (I'm aware not all spam can be caught
>     though). However spam messages get often through. It seems like
>     basically 50% of spam is a false negative.
>     So I looked a bit how I can improve this.
>     In Mailwatch I see at the bottom:
>     Spam Report: Score: "large" Matching Rule: "too"
>     SpamAssassin score is 0. Size is e.g. 257kb. Almost all spam that
>     gets through is like this.
>     The domain in the TO field in the headers is not one of the
>     domains that my mailserver handles which is confusing. (not an
>     open relay though, but I do have some kind of catchall:
>     * <> goes to the same mailbox apart
>     from some exceptions)
>     Now from my interpretation of what I see in Mailscanner the
>     message is not being sent through SpamAssassin since the message
>     size is too big and so it uses 0 as the score. Is that correct?
>     I have looked into the Maximum Message Size setting:
>     Maximum Message Size = %rules-dir%/max.message.size.rules
>     And in this rule file I only have this:
>     FromOrTo: default           0
>     This is the default. I looked at the other samples in that file
>     but they actually do set a limit while 0 seems to be "no limit".
>     So I don't understand why these bigger messages are skipped while
>     for smaller ones SA is invoked and seems to work properly.
>     Anyone who can lead me in the right direction? Suggestions? Ideas?
>     Thanks!
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