1

FINDING YOUR WAY AROUND

Load balancing with RiskFilter

LOAD BALANCING WITH RISKFILTER

You can deploy RiskFilter in a cluster and load-balance using MX records:

1On the DNS server hosting your domain, create an MX record for each primary RiskFilter server using the same MX preference.

2Give the failover server a higher number. This will give it a lower preference.

Table 1-1 shows an example of MX preference assignments for load-balancing and failover using MX records.

Table 1-1Using MX Records for Load-Balancing

Mail Exchanger

IP Address

MX Preference

 

 

 

Site A

 

 

 

 

 

mx1.siteA.com

208.126.216.20

5

 

 

 

mx2.siteA.com

208.126.216.21

5

 

 

 

mx3.siteA.com

208.126.216.22

5

 

 

 

mx4.siteA.com

197.201.56.201

10

 

 

 

Site B

 

 

 

 

 

mx1.siteB.com

197.201.56.201

5

 

 

 

mx2.siteB.com

197.201.56.202

5

 

 

 

mx3.siteB.com

197.201.56.203

5

 

 

 

mx4.siteB.com

208.126.216.20

10

 

 

 

Figure 1-2Load balancing

4

Administrator’s Guide

SurfControl RiskFilter - E-mail V5.2.4

Page 9
Image 9
Surf Control 5.2.4 manual Load Balancing with Riskfilter, Mail Exchanger IP Address MX Preference