Problem with NAT rules for Webmail Service in Router 2921

[ptanh]

A/ Description:

In our system environment, we have 03 FTTH internet lines

( internet load balancing in one router 2921

This router have intergrated card EHWVIC-4ESG inside this router)

G0/0 ppoe: line 1

G0/1 ppoe: line 2

G0/2 ppoe: line 3

EHWVIC-4ESG connected to LAN

B/ Main purpose we want to do

Now we want to define in this router as below:

step 1- define NAT rule for only webmail service running on line 01.

step 2- define the left 02 internet lines to run internet service.

C/ Current Situation which we face now:

After we configured, above step 1 ( in B section) didn't run properly such as:

from outside, we access this webmail service(http://webmail@abc.com), after server authourize and reply this session, we have 02 scenarios:

1/ the reply to users' session on sometimes right public IP we want, so user can access the webmail server => OK

2/ Sometimes, the reply to users' session on the left 02 lines, so User can not access the webmail server => not OK

note: please see more details in below attached configuration file

we hope to receive your feedback asap.

[Wayne DeNardi]

I think you may have posted this in the wrong section of the forums (TelePresence) - perhaps you should move your question to a section of the forums that is more appropriate, ie WAN, Routing and Switching where there are likely more experts in the area you are querying.

Wayne
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[ptanh]

thank you