swamped mail relays - suggestions

[Martin Hepworth]

Greg

at that level the emergency mode of MailScanner should be kicking in...

# If more messages are found in the queue than this, then switch to an
# "accelerated" mode of processing messages. This will cause it to stop
# scanning messages in strict date order, but in the order it finds them
# in the queue. If your queue is bigger than this size a lot of the time,
# then some messages could be greatly delayed. So treat this option as
# "in emergency only".
Max Normal Queue Size = some number

what MTA are you using and can it do split dirs like postfix and exim
can do?

Also are you rejecting unknown users on the inbound MTA?


--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300


Greg Matthews wrote:
> On Tue, 2005-05-17 at 16:04 +0200, Steen, Glenn wrote:
>
>>Greg Matthews wrote:
>>(snipped mangled quote by OutLook-QuoteFix. Sigh)
>
>
> as bad as groupwise?
>
>
>>>Any comments and suggestions most welcome.
>
>
>>Seems that write performance might be what is killing you.
>>Do you use the tmpfs thing for the incoming (MS work-) directory?
>
>
> yes, I already tmpfs for the work dir. I am thinking that with 10,000
> mails in the mqueue.in directory (~20000 files) the system might be
> stalling just reading the dir.
>
> I've just increased max children from 9 to 20 to see if that helps. The
> comments recommend 5 per cpu but doesnt mention HT processors.
>
>
>>-- Glenn
>>
>
> --
> Greg Matthews           01491 692445
> Head of UNIX/Linux, iTSS Wallingford
>
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