Too Large or Too small or neither?????

Julian Field MailScanner at
Wed May 6 20:46:57 IST 2009

On 06/05/2009 15:49, Mike M wrote:
> Mike M wrote:
>> After updating to 4.76.23 from 4.74 today I had some users complain 
>> about not getting some messages.   Here is a portion of the error 
>> they get:
>> <snip>
>> ----------------------------------------------------------------------
>> The original e-mail message, or an attachment it contained, was too 
>> large and has been removed.
>> <snip>
>> At Tue May  5 13:15:51 2009 the content filters said:
>>    MailScanner: Attachment is too small
>> <snip>
>> ---------
>> All of the messages I've looked at with this problem appear to have 
>> both text and html versions.   There's an example of a quarantined 
>> message at:
>> If it would be helpful to see the qf file just let me know.
>> I have changed the min attachment size from 1 to 0 for now so that 
>> hopefully these messages can go through, but I don't know what it is 
>> about these html emails that is triggering the attachment size 
>> filter. Oh and MailScanner --lint shows no errors.   Any clues??
> CORRECTION: It is happening to just plain text messages as well.   
> What should I be looking for to determine why Mailscanner is thinking 
> messages have 0 byte attachments when I can't find anything in the qf 
> or df files in the quarantine that look like any sort of attachment is 
> included with the email?
> Does the fact that the error message states that the attachment is too 
> large in one spot and too small in another indicate anything special 
> that might point me in the right direction to troubleshoot?    I've 
> been using MailScanner for years and have never had a problem 
> upgrading countless times before, but this is occuring on more then 
> one server since I upgraded yesterday.
I'll need to take a look at this, and try a 0-byte attachment and see 
what happens.
To disable the tests, set
Maximum Attachment Size = -1
Minimum Attachment Size = -1

Please read the docs carefully and ensure you are setting the values 
What is the precise case that you think it is handling incorrectly?


Julian Field MEng CITP CEng
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Contact me at Jules at Jules.FM

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