Hi,

I've got a mikrotik router that was currently being used for pptp access to an office. This worked perfectly.
Last week we stablised an IPSec site-to-site connection to a provider, which worked. We can connect from the office to the remote site without a flaw.

The problem arises when we try to get our pptp users to access the IPSec remote network. It does not work at all.

Any clues or pointers?

I would guess that the pptp users don't have a route to the IPSec connected network or that the IPSec connected network doesn't have a route to the pptp users. Both ends need to know about each other or e following a default route to the concentrating router.

Yup.. route.

If you use a PPtP VPN on the same network... ala 192.168.0.0/24 VPN address 192.168.0.199. Assuming you have proxy-arp on... then you cn use the network. Then the IpSEC setup which relies on the network traffic being sent to the far side... well there you have it.

You were right! There was a route problem.

Is there any way to "push" routes using PPTP? I use to configure Openvpn in Linux with the push route option and it worked very well, but PPTP is a pain in the *ss.

It looks like no... I don't see the option, plus normis seems to be answering no in this chain:
http://forum.mikrotik.com/viewtopic.php?f=10&t=28131