You will need contact their support on that. They will tunnel in and adjust it for you. However ask them if this will reset each time you update the firmware, I suspect it will that is how any special settings I have had them make behave.
There is a downside to what you are doing.....turning down the dns cache will probably turn down all the dns cache's....so you will be doing far more lookups with it. JK That sounds likely, I just don't see anywhere within the GUI to control that behaivor. - Sean On Thu, Jan 20, 2011 at 8:55 AM, Kennedy, Jim <[email protected]<mailto:[email protected]>> wrote: Cuda's caching the dns lookup? From: Sean Martin [mailto:[email protected]<mailto:[email protected]>] Sent: Thursday, January 20, 2011 12:43 PM To: MS-Exchange Admin Issues Subject: SMTP Load Balancing - Barracuda Good morning all, I've got two Barracuda SPAM/Virus Firewalls that I'm trying to setup for load balancing outgoing mail. The Barracuda's forward mail to a smarthost, and since they're clustered, I can't specify separate smart hosts per device. Barracuda documentation indicates this is accomplished using MX records. I created an MX record named testmx.domain.com<http://testmx.domain.com/> and two A records both named test.domain.com<http://test.domain.com/>, one for each of the downstream smart hosts. However, both of the barracuda's appear to favor only one of the smart hosts when delivering outgoing mail. Repeated NSLookups against the MX record seem to alternate between the A records as expected. Any ideas on why this wouldn't work? - Sean --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe exchangelist
