We used to use the BigIP devices as well, but since NLB (network load balancing) was introduced for free with Windows 2003, we use that as our solution and no longer use the expensive BigIP devices. I would recommend looking into that... Chris ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Mike French Sent: Tuesday, August 29, 2006 1:52 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] SMTP Load Balancer Kinda off topic? But I have to ask: Scenario: Multiple Firewalls (5) on the perimeter Single Large pipe to the INET We need to load balance SMTP traffic to the Perimeter firewalls (SMTP is the only concern), if firewall 1 is saturated then go to firewall 2 and so on. My question is, since I have little experience with load balancers, anyone have a short list of vendors that they have had good luck with that provides this type of load balancing? I would imagine this scenario would be pretty simple. F5 BIG-IP for instance? Or is that over kill? Just looking to narrow down a search without having to "Drink the Kool-aid" from vendor contacts...... Mike French Acclaim Networks 754 Port America Place Suite 150 Grapevine, TX 76051 (888) 327-5647 (817) 488-1030 x104 FAX (817) 488-1103 <mailto:Mike.French@acclai> Mike.French@xxxxxxxxxxxxxxxxxxx <mailto:Mike.French@xxxxxxxxxxxxxxxxxxx> www.acclaimnetworks.com <http://www.acclaimnetworks.com/>