Autor: W B Hacker Datum: To: exim users Betreff: Re: [exim] Connection age feature?
Marc Perkel wrote: >
> On 7/14/2010 11:41 AM, Graeme Fowler wrote:
>> On Wed, 2010-07-14 at 09:02 -0700, Marc Perkel wrote:
>>
>>> Is there a variable that returns the number of seconds the connection
>>> has been open?
>>>
>> No.
>>
>> However in the connect ACL you could set a connection variable to hold
>> the value of $tod_epoch (or one of the variants) and then check against
>> that when the connection is closed.
>>
>> Note that this is unlikely to be reliable, because all manner of things
>> could cause the connection to be open for a long time - and at least 50%
>> of those reasons are at your end.
>>
>> Graeme
>>
>
>
> It works. And most everything that takes more than 30 seconds to reach
> the data acl is spam (that not a large message and when load levels are
> normal) It does seem to be somewhat useful in detecting spam in
> combination with other factors.
>
>
Interesting.
Maybe.
*Why* does it take so long?
Are your own content-scanning delays a significant contributor, perhaps?
NB: *Excluding* any penalty delays WE impose, but *including* SA and ClamAV,
even spam is generally handled here in sub two seconds end to end, so....
