Hi Davide -

Thanks for your input -

I'm running OpenSSL (OpenSSL/0.9.7e-p1).  I'm not compiling against or 
running any other SSL libs (that I am aware of - is there a simple way 
to test?).  I guess the important question is how much of a speed 
slowdown one might expect when using SSL.

As an addendum to what I am seeing, I found out that a user had sent out 
something like 75 emails with a 9 mb attachment, which was causing the 
problem in that instance.  I have reduced max attachment size to about 4 
mb and things seem fine so far.  However, 10 meg attachments have been 
fine for the entire life of 1.23 and 1.22 configured the same way (ASSP 
-> ClamSMTP -> XMail for 2 years or so?).  This is a duel Opteron with 2 
gb ram on a 1.5 mb/1.5 mb line, so it should be able to handle that kind 
of load, I would think - I am not seeing any significant loads in 
general.  The server handles about 5000 email requests  per day.

I would suspect the ASSP -> ClamSMTP (ClamAV) -> Xmail as the culprit, 
but in this case XMail was running up the cpu cycles, and the email was 
outgoing not coming in.  It would try to send the 9 mb attachment out, 
ramp up to about 98% then fail any further connections.

Jeff


Davide Libenzi wrote:
> On Wed, 14 Feb 2007, Jeff Buehler wrote:
>
>   
>>  Thanks for the info, Francesco.   Obviously, I spend a lot of time going
>> through the documentation (since all of that is right there in the docs and
>> Ihad only "EnableSMTP-TLS"[TAB]"0"!)
>> Do you think it reasonable to assume that I might see a performance increase
>> after completely disabling all SSL functionality this way, or might I be
>> "barking up the wrong tree"?  Ultimately I may use SSL, but right now I have
>> no need real for it...  I am traveling to Germany/Paris in two days, and it
>> would be nice if my mail server didn't keep locking up while I'm away!
>>     
>
> I can't be openssl. If openssl is working fine with other apps, then the 
> library is ok. IMO it's somthing else.
>
>
> - Davide
>
>
> -
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