Gary wrote:

> Peter wrote:

>>> # stop anti-virus scanning when the first scanner detects a virus?
>>> #$first_infected_stops_scan = 1;  # default is false, all scanners in a 
>>> section
>>> # are called

>> Why would you want a second scanner to kick in if the first detected it
>> as a virus?  As confirmation?

> Yes, mainly to compare scanners. Especially informative when a new virus
> is found and not all scanners detect it. You get to find out who did
> the best job. On my system recently a new virus was first detected by
> BitDefender, then later ClamAV, and surprisingly third Kaspersky.
> Typically Kaspersky does better than that.

>> Is this worth it in terms of resource usage?

> Every message will be scanned by all primary scanners when no virus is
> found, so there is only a minute amount of savings if you skip one or
> more scanners when a virus is found.

>> Peter

Actually, caching is involved, so every message may not actually be scanned:

# expiration time of cached results: time to live in seconds
#   (how long the result of a virus/spam test remains valid)
$virus_check_negative_ttl=  3*60; # time to remember that mail was not infected
$virus_check_positive_ttl= 30*60; # time to remember that mail was infected

Gary V


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