[j-nsp] IPSEC VPN tunnel is not accepting only SMTP traffic

[Dale Shaw]

Hi,

On Fri, Jul 2, 2010 at 11:27 PM, Fahad Khan <fahad.khan at gmail.com> wrote:
>
> I am facing an issue regarding an IPSEC tunnel between ISG1000 and Cisco
> box, The VPN is up, all traffic is going through it but only SMTP traffic is
> some how not being flowing through the tunnel, no SMTP connection is being
> made with mail server.

There are so many variables and you've provided such little detail
(again) that it's going to be difficult for people to help you.

Things that are missing from your post:

- Details of the 'Cisco box'
- Details of the IPSec tunnel configuration on the peers
- Details of the network infrastructure between the peers and between
the endpoints
- Software revisions running on the relevant nodes
- How you have verified that the tunnel is 'up'
- How you have verified that non-SMTP traffic is flowing
- How you have verified that SMTP traffic is not flowing
- What troubleshooting (if any) you've already done

Cheers,
Dale