Clamd

[Dhawal Doshy]

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Glenn Steen wrote:
> On 15/09/05, Alex Neuman <alex at nkpanama.com> wrote:
> 
>>Well, it can be faster to have a program that's always loaded and in
>>memory scan the incoming datastream - but it MailScanner doesn't work that
>>way. It receives a bunch of messages before it "wakes up", looks at the
>>queue, scans everything from within perl using the module faster than it
>>would be to individually feed everything to clamd, and dumps whatever's
>>left after processing in the "real" queue. At least that's what I
>>understand.
>>
> 
> All the real difference is in the fork/exec of clamdscan (which you
> cannot avoid in the clamd solution) ... Not much perhaps, but it'll
> always give the edge to the perl module. And forking clamscan or
> clamdscan for a batch.... doesn't really matter, since if you need
> speed, the module is there to use.
> So Julian definitely got this right, for MS. If MimeDefang could
> benefit from the module to, I couldn't really say:-).
> 

I run clamd (with qmail-scanner) on quite a few servers, clamscan (with 
MailScanner) on another few and clamav-module (again with MailScanner) 
on my critical servers, for sure clamav-module is the least resource 
consuming and fastest. No stats to prove so though.

Also one more reason for not running clamd (iirc) is the daemon 
dependency, if clamd dies there is no way MailScanner will find out. Is 
there any daemon the MailScanner depends on?? apart from itself, the MTA 
and in a way DCC, i don't recollect any.

- dhawal

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