Re: [exim] increase in smtp concurrency

John Horne wrote:
> On Fri, 2007-09-07 at 14:56 +0100, Chris Edwards wrote:
>
>> Anyone else noticing more concurrent incoming SMTP connections in last
>> couple of weeks ?
>>
>>
> May I ask do you mean concurrent as in from the same sending host, or
> simply that you are receiving more connections generally than usual?
>
>
>> Perhaps it's time to switch our DNSBL etc tests from "deny" to "drop" mode.
>> Is there any obvious downside to this ? Do most folk use drop already ?
>>
>>
> I've been running one of our mailhubs with a 'drop' instead of 'deny'
> for the past few days. No problems reported.
>
>
> John.
>
>

Just a thought. Maybe you could do a rate limit in the NOTQUIT acl to
slow down IP addresses that don't send a quit?