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Unable to connect Exchange via Network Connect

ssuet_
Occasional Contributor

Unable to connect Exchange via Network Connect

Hi Folks

 

Im unable to connect Exchange once i  connect via NC .I did packet capture i can see NC users can send SYN packet but there is no response from Exchange

 

Be informed there is not F/W exist between NC and Exchange 

 

 

 

Thanks

Faizan Khurshid

7 REPLIES 7
jayLaiz_
Super Contributor

Re: Unable to connect Exchange via Network Connect

Hi Faizan,

 

Are other backend resources other than exchange accessible via NC

 

If you run tracert exchnage server IP, where does the packet drop

 

Regards,

Jay

ssuet_
Occasional Contributor

Re: Unable to connect Exchange via Network Connect

Hi

 

Thanks for your reply ,no packet drop  yeah i can access "inhouse application" oracle etc

 

 

 

Thanks

Faizan Khurshid

Maalolan_
Not applicable

Re: Unable to connect Exchange via Network Connect

HI Faizan,

 

Are you able to telnet to the exchange server on port 25 from your command prompt. If yes, then the problem might be with the application . Please check if outlook configuration and stuff are proper.  If you are not able to telnet, and see only SYN being sent and nothing comes back, then there might be issues with connectivity or access.  Like asked before, doing a trace route might possibly indicate where the traffic might be getting dropped. 

 

Hope it helps. 

 

Regards

 

jayLaiz_
Super Contributor

Re: Unable to connect Exchange via Network Connect

Hi Faizan,

 

Is this issue seen by all clients connected via network connect, there seems to be no issue with the network connect as you are able to access other applications.

 

 

we need to analyze the wireshark captures to look into this.Is it possible for you to open a case with JTAC?

 

Regards,

Jay

rdit_
Regular Contributor

Re: Unable to connect Exchange via Network Connect

Did you allow access in the ACL of NC?

ssuet_
Occasional Contributor

Re: Unable to connect Exchange via Network Connect

Hi All

 

Thanks for your reply ,i can ping the server but cant telnet once i did packet capture . I found that i can send sysn packet only there is no response from server

 

Any idea?

 

 

 

Thanks

Faizan Khurshid

zanyterp_
Respected Contributor

Re: Unable to connect Exchange via Network Connect

Can the exchange servers connect/ping/tracert to the network client ip?