Jim Popovitch said:
> On Wed, 2005-06-15 at 14:22 -0700, Dennis Peterson wrote:
>>
>> clamd is useful for testing for viruses on the file system in addition
>> to
>> any email viruses. clamav-milter handles only email. They are not
>> exclusive tools.
>
> ;-)  OK, I understand their purposes, but maybe I (or maybe others)
> don't understand how they work.  Are you saying that clamav-milter is a
> wholly contained AV process that does NOT require clamd?  Why then is
> there a common local socket or network interface setup between the two?
>
> -Jim P.

The current version of clamav includes clamd functionality in the
clamav-milter. It was not always so. It also didn't work in the first
couple releases but the current release candidate appears to have the
problems solved.

You may or may not need clamav-milter. I don't use it as I have another
milter that replaces it functionally, and uses clamd.

You may or may not need clamd to run depending on whether you wish your
scanner to run on the same box as your milter. I have a distributed system
where Sendmail is on several boxes and the milter/scanners are on others.
This gives me excellent load management and because I can migrate
functionality around to different systems I can also take one or more out
of service for maintenance.

The milter I use also does content scanning and behavior monitoring. I
think but don't know for certain that clamav-milter provides only virus
scanning. There are other milters that do multi-purpose operations and so
it is possible to avoid adding another milter by selecting a multi-purpose
milter instead.

These are architecture issues that you can explore as you develop your
email environment. You just need to understand there is no single perfect
way to deploy this tool, but because there are many architecture options,
one or more may be more suitable for you than others. Some considerations
would include monitoring critical processes and restarting them if they
should fail, system performance, scalability, maintainability. It finally
becomes your choice as to what works best for you and your environment.

dp
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