Since you didn't mention the VPN solution, I'll give you my old standby
answer...

1) Change the authentication type in Outlook 2003 from Kerberos/NTLM to just
NTLM. (Some VPN solutions drop the Kerberos UDP packets)

2) Verify name resolution is working over the VPN connection. (Means test
DNS & WINS name resolution using nslookup and nbtstat)

"rogerc" wrote in message
...
can't retrieve mail through outlook 2003 through a vpn connection. An
exchange server are used on site.