MailScanner performance issues

[Julian Field]

On 11/11/2010 12:45, Zaeem Arshad wrote:
> On Thu, Nov 11, 2010 at 5:36 PM, Julian Field
> <MailScanner at ecs.soton.ac.uk>  wrote:
>> If it's not picking up full batches, that's because they haven't finished
>> being delivered to your server so cannot be processed.
> With over 1500 emails in the hold queue, I think the messages are
> delivered to the server. Correct?
Not true. Postfix will move the message into the hold queue as soon as 
it has enough information to determine that it should be put there, even 
if it is still being received. That is what made implementing Postfix 
support in MailScanner so much fun :-)

The sure sign that it has finished being received is that MailScanner 
has picked it up and is processing it. There are a *lot* of tests in 
MailScanner to be sure that this doesn't happen too early. But it will 
happen as soon as it is complete.
>> I would suggest that you have a lot of incoming sendmail processes and
>> netstat will probably show loads of port 25/tcp connections inbound.
>>
>> Someone's pummelling you with mail.
> I suspected that first but my rejection rates are the same. I have
> gone through the postfix logs and did not find any thing suspicious.
>
> Regards
>
> Zaeem

Jules

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