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exchange 2007 'trying to connect' routing issue

rkquartey
Level 1
Level 1

hello,

I have clients on a LAN using outlook 2007. However, occasionally outlook disconnects from the Exchange Server and tries to reconnect. So you get the message at the bottom of outlook reading 'trying to connect to exchange server'. It would take say another 5 mins or so to connect and afterwards it would be fine for some time. Then after a while outlook disconnects and goes through the whole process again.

The interesting thing is i dont get this happening when i replace the cisco 831 router with say a linksys router. my question is, are there any lines i have to add to my configuration to resolve this issue. the configuration on my router is pasted below or is this a microsoft issue?

thanks.

router1 #sh run
Building configuration...

Current configuration : 1860 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname router1
!
boot-start-marker
boot-end-marker
!
enable secret 5 xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
!
no aaa new-model
!
!
dot11 syslog
ip dhcp excluded-address 192.168.1.1
ip dhcp excluded-address 192.168.1.99
ip dhcp excluded-address 192.168.1.254
ip dhcp excluded-address 192.168.1.1 192.168.1.10
!
!
ip cef
ip domain name xxxxxxxxxx
ip name-server x.y.z.x
ip name-server x.y.z.x

!
!
!
!

!
!
archive
log config
  hidekeys
!
!
ip ssh version 1
!
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4

ip address x.x.x.x 255.255.255.248
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
!
interface Vlan1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 x.x.x.x
!
ip http server
no ip http secure-server
ip http timeout-policy idle 5 life 86400 requests 10000
ip nat inside source list 10 interface FastEthernet4 overload
ip nat inside source static tcp 192.168.1.254 3389 x.x.x.x 3389 extendable
!
access-list 10 permit 192.168.1.0 0.0.0.255
!
control-plane
!
!
line con 0
privilege level 15
password 7 xxxxxxxxxxxx
logging synchronous
login
no modem enable
line aux 0
line vty 0 4
password 7 xxxxxxxxxxx
logging synchronous
login
transport input telnet ssh
!
scheduler max-task-time 5000
end

1 Reply 1

sean_evershed
Level 7
Level 7

Hi, I experienced a similar problem where mail was disconnecting / reconnecting.

By using Wireshark we proved that it was a problem with the DNS entry for the Exchange server on our internal corporate DNS server. There were several redundant entries on the DNS server that needed to be removed and updated.

I suggest you eliminate this as a potential issue for your problem.

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