[imp] Scalability of rate-limiting?

Andrew Morgan morgan at orst.edu
Thu Oct 15 19:22:30 UTC 2009


On Tue, 6 Oct 2009, Wil Cooley wrote:

> Andrew Morgan wrote:
>
>> We use rate-limiting here to control accounts that have been phished (a
>> fairly regular occurrence).  I think our installation is very similar in
>> size to yours...  We peak around 3k concurrent IMAP connections (most
>> from Webmail) and have 3 webmail frontends.  We are still using the
>> Datatree though.
>>
>> Our limit is set to 500 messages per 24 hours, for all users.  I've
>> never tried setting per-user limits.
>
> Let me make sure I'm not reading this wrong... this limit is 500
> messages per user per 24 hours, right? That's not 500 messages per 24
> hours for the whole webmail installation (I can't imagine that you'd
> have fewer than 10k messages per day.)

Correct, 500 messages per user per 24 hours.

> What about recipients per message?

We don't limit that here.  If they want to send to 500 recipients at once, 
that is okay by me.

(I know I already answered this on IRC, but I'm following up here for the 
archives)

 	Andy


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