Internal and external IP email servers

[Coppernob]

here is my problem:

Our office email server is assigned a fixed external IP: 63.203.X.X I
set up Outlook to look on that server IP and it correctly gets it's
email.

When I am in the office network instead i cannot "see" the 63.203.X.X
IP address and instead have to use it's internal IP address of
10.0.0.10. I thus have two email account's.

I am not a techie, but i am slightly conversant in NAT and firewall
setup if that is the problem. Can you suggest ways of seeing the
external IP address from inside the network?

 

[Lanwench [MVP - Exchange]]

here is my problem:

Our office email server is assigned a fixed external IP: 63.203.X.X I
set up Outlook to look on that server IP and it correctly gets it's
email.

OT, but I strongly recommend your network admins install a good firewall,
and block this access ASAP as well as any other potentially dangerous ports.
They should implement VPN or something else for remote users - if you can
connect Outlook directly to the server without it, you probably already have
uninvited visitors on your network.

When I am in the office network instead i cannot "see" the 63.203.X.X
IP address and instead have to use it's internal IP address of
10.0.0.10. I thus have two email account's.

Why not use the server name? If you were to use VPN you could do this anyway
(and use a hosts file or WINS to handle the local name resolution). A klugey
workaround in your case might be to use a hosts file anyway -

63.203.X.X servername
# 10.0.0.10 servername

.....and remark out the "incorrect" one when needed with the hash mark....run
nbtstat -R to reload the cache. Inelegant, admittedly (and probably could be
scripted better than this), but it may work for you. Given that I wouldn't
use the config you have going right now anyway (my clients all use VPN and
hence don't need to change anything in their profiles) I can't say for sure
whether this is the best approach, but again, if you poke too many holes in

I am not a techie, but i am slightly conversant in NAT and firewall
setup if that is the problem. Can you suggest ways of seeing the
external IP address from inside the network?

No - not the right approach anyway.