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GWIA load balancing using DNS

(Last modified: 17Jun2003)

This document (10084245) is provided subject to the disclaimer at the end of this document.


GWIA load balancing using DNS


Novell GroupWise 5.5 EP

Novell GroupWise 6

Novell GroupWise 6.5

Novell GroupWise Internet Agent (GWIA)


GWIA is constantly busy processing inbound messages

Delay receiving inbound mails


Using the DNS server MX Records with different preference ranking, you can have some form of load balancing and redundancy option.

For example, the registered domain name is and you have 3 GWIA gateways, 2 for incoming and 1 for outgoing

In the DNS MX Record table, there will be these entries :
abc.COM preference = 10 mail exchanger =
abc.COM preference = 15 mail exchanger =
abc.COM preference = 10 mail exchanger =

What this means is that mail sent to any user will be delivered to "" or "" first as the preference weighting for both is 10, if both of those gateways are unavailable, then it will delivered to "".

In Gw 5.5 with Internet Addressing enabled, you can have system level GWIA and domain level GWIA. Domain GWIA always override system setting. So for outbound mail you can specific which GWIA is to be used for which domain.

Normally DNS settings are handled by an ISP so check with your ISP for this


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  • Document ID:
  • 10084245
  • Solution ID: NOVL90304
  • Creation Date: 16Jun2003
  • Modified Date: 17Jun2003
    • NovellGroupware

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