Exchange 2010 DNS Question
I have two Exchange 2010 CAS/HUB/MB servers configured with the load balancer. Everything has been working fine up unil recently. Currently the servers are having issues updating their DNS info to our...
View ArticleHA-cluster inconsistent
We are having trouble with a pair of LoadMaster running in a HA-cluster. The usual pattern is that at some random point in time the cluster desynchronizes, with the primary node showing status...
View ArticleSNMP counters don't show any activity
We have a pair of LoadMaster running in a HA-cluster, one-armed configuration. Eth0 is used for inbound/outbound traffic, Eth3 is a direct connection between the two machines. Eth1 and Eth2 are not...
View Articletroubleshooting intermediate certs
I am using a VLM in front of Exchange 2010. iPhones running iOS 4 require an intermediate cert for ActiveSync to not prompt about the cert not being trusted.I added the intermediate cert to the VLM and...
View ArticleLoad balancing between multiple sites for disastery recovery
We are looking at setting up a system for disaster recovery of our exchange. Office 1:CAS ServerMailbox Server Office 2:CAS ServerMailbox Server Office 3:Witness ServerLoad Balancer The offices are...
View ArticleDNS issue
I am trying to resolve server names in the diagnostics and whenever I ping a host it says unknown host xxx.I can ping my dns servers fine and we have no firewall rules in place between the load...
View Articlepacket loss to VLM ipaddresses and servers with default gateway to VLM
we are in process of moving to new network equipment. on our old 6500 we had the vlans terminated and made a trunk between the old and new 6500 switch.This weekend we removed all vlans from the old...
View ArticleRepeated "Removing RS" followed by "Adding RS"
We are using a pair of LM2000 balancers with Balancer Version 4.3-48. We have a few virtual services that currently contain one real server and use the ICMP Ping Real Server Check Protocol. The log is...
View ArticleConf Backup Restore losing Access white list
I'm moving VLMs to LM-3600s and when restoring my config from backup, it doesn't include the access control white list for the SMTP relay service.So I'm using VLMs with version 6.0-38. I create a...
View ArticleMAPI Problem with Exchange 2010
I have 2 Exchange servers with all roles.And HA LB 2200 works with HTTPS.When i try to setup a MAPI then i can't set the incoming trafik to the VIP of the LB2200.But when i try to set the incoming...
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Unable to setup Gmail to send via Exchange 2010 behind Loadmaster
We recently installed the LM-2600 for our Exchange 2010 environment. We are able to successfully connect a multitude of e-mail clients (Outlook for PC/Mac, Thunderbird, Apple Mail) via SMTP using port...
View ArticleLM 2600 nor realy Balancing
like the title says the lm 2600 isn´t realy Balancing our Exchange 2010 CAS servers: first server 163 Connection (active)second server 2824 Connections (active)Scheduling Method: Round and Robin
View ArticleExchange 2010 monitoring issues through Loadmaster VIP
Hi,Running 2-armed LM-2200 HA setup. External Network 10.14.28.0 and Internal Server side 10.13.32.0. Running 2 Multirole Exchange 2010 servers. Exchange servers has the Loadmaster as its gateway.CAS...
View ArticleKemp Loadmaster behind TMG and Exchange
Hello all! We have a specific configuration with specificproblems:Internet => TMG (DMZ) => Router => KEMP(single Armed) VIP => CAS Array + MB Servers.Because of company’s policies all mail...
View ArticleCant Access Web interface
Hello, I just got the LM2000 from my company but I cant set it up! I first did a factory reset. It is activated properly. I plugged an ethernet into eth0 on the four port selection in the front and...
View ArticleCannot ping from other vlan
I just setup my first VLM-1000 and I am unable to ping the machine from my laptop. If i remote into a server on the same Vlan i can ping it and connect to the web interface but i get nothing when...
View ArticleFirmware 7.0 and Safari on iOS
Hello,after upgrading to firmware 7.0 on a LoadMaster 2500 the web frontend will not be displayed correctly on iOS (tested on iPhone 5 and iOS Simulator).Best regardsMarkus Knaup
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Load Balancer as Default Gateway and RDP
Currently all of our load balance services either run at L4 or in non-transparent mode but we now have a requirement to configure an SMTP service as L7 transparent due to the source IP address.The...
View ArticleAdaptive Script returns value 0 in real Servers Statistik
Hi!We have a Windows 2008R2 Terminal Server Farm with 12 Servers up and running.I´ve tried to geht the next two Servers to work, but were not able to get the adaptive Script working properly.The...
View ArticleError when trying to access a VS from the Internet
I have a VS set up and it works perfectly when accessing it from the internal network. When I try to access it from the Internet I receive the following error in the loadmaster logs:Jun 4 17:38:01...
View ArticleNot able to monitor Ironport as a real server
I have created an SMTP virtual service for KEMP which directs traffic to an Ironmail (real) server, however the server cannot be monitored on port 25 using SMTP protocol. However, if I disable...
View ArticleKEMP and Cisco ASA5550 - Connections being reset
We have a working test configuration for Exchange 2010 sat behind a KEMP LM-3600 (HA Pair). This all works fine internally, but our Networks team are wanting to put this behind an Cisco ASA5550.We have...
View ArticleExchange 2010 CAS gateway with Kemp virtual VLM 1000
Hello,We have deployed a VLM 1000 for our Exchange 2010 CAS array. The servers and the load balancer are in the same VLAN and same subnet. If I turn off the transparency in the virtual service...
View ArticleExchange 2013 and 2 x Kemp VLM-100; can't seem to get this to run
I have 2 Exchange 2013 VM's running both roles, a DAG has been set-upbetween these two and that works excellent.I have followed this link mostly for Load...
View ArticleSMTP Relay for Servers in same Subnet
I've just setup a HA pair of VLM-1000 servers and configured a VIP for load balancing SMTP traffic for application servers and scanners (scan2mail). I have 2 Exchange 2010 servers in Multi-role setup...
View ArticleMigration Scenario: Ex2003 ->2010 HA via LM problem accessing 2010 HA from...
Hello Board,i´m having problems in setting up my needed routinggroupconnector to connect 2003 server with an ex2010 system.My configuration so far:One Exchange Server 2003IP:10.0.255.107Two Exchange...
View ArticleRandom connections drops
I'm having an issue with my users getting random connection drops. Sometimes after 3 mins and other times after 10 mins. Users are directed to the main URL, lets say 123abc.com and then depending on...
View ArticleOWA Time out for Public and Private
We have a problem with OWA timing out after 5-10 minutes when both real server are enabled in the VIP. When only one real server is enabled OWA works fine. We have verified the timeout setting on both...
View ArticleLoadBalancer Backup wget
Hello, we take backups every day with this method wget --no-check-certificate https://backupuser:backuppassword@192.168.30.244/progs/admin/backup?ba=C... -O LoadBalancer-backup_20090716wget...
View ArticleExchange 2010 Resets after 30 seconds
Hi,We have a two-member Exchange 2010 CAS Array behind a LoadMaster (6.0-28a). We've been struggling with Outlook users constantly being prompted for credentials for some time. Other than that,...
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