Spamdyke needs to be on the perimeter (connected to the remote/sending
server) in order to be effective. This is because most of what it does
hinges on the remote/sending server's IP address, which is different for
messages coming from the backup MX.
Some spammers target MX hosts with lower/lowest priority, as they
sometimes don't have as strong of spam filtering in place.
So yes, you should by all means have spamdyke installed on backup MX
servers.
The only reason I can think of to not have spamdyke installed would be
for efficiency if it's not really needed. Even then though, I think that
spamdyke's efficient enough that the difference between having it and
not would be negligible.
--
-Eric 'shubes'
On 03/05/2012 10:26 AM, Dan McAllister wrote:
Scott,
I chose to implement my backup mail servers as essentially exact
duplicates to my main mail server, with the exception of the smtproutes
entries (and the lack of a fully populated mysql database)... so I
currently DO run spamdyke against all inbound mail on my backup MX
systems... however, I also do NOT re-run spamdyke on those messages when
they're finally delivered to the main server.
I don't have any issues with this setup... others may have other
experiences they'd like to share...
Dan
IT4SOHO
On 3/4/2012 4:04 PM, South Computers wrote:
Finally got around to putting spamdyke on my servers. Yes, yes.... I'm
a bit behind.
Anyway, wondering if I should put it on my backup mx boxes as well.
Pros or Cons?
Thank you kindly,
Scott
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Vickers Consulting Group offers Qmailtoaster support and installations.
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---------------------------------------------------------------------------------
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