Hello,
Are you sure 'foobar.remote.site' should resolve? Does "ping foobar.remote.site" work?
yes, the host is resolved on commandline and other services on this system can reach this host.
Do you have a /var/run/stunnel/etc/resolv.conf file?
No at this time I dont have this file, but it doesnt change anything if I copy the original from /etc to this lokation. But this brings me to the point try to dissable chroot and in this case stunnel is working as expected. So far so good - there is something wrong in the chroot jail.
I try to put it to /var/run/stunnel - no luck, but maybe there are other files missing as well?
regards Tom