STunnel Not Reading Configuration File

Solution 1:

You may have both stunnel3 & stunnel4 installed on your system.

The default for "stunnel" is to softlink it to stunnel3:

root@sibelius:/usr/bin# ls -l stunnel*
lrwxrwxrwx 1 root root      8 Oct 18  2011 stunnel -> stunnel3
-rwxr-xr-x 1 root root   2797 Oct 18  2011 stunnel3
-rwxr-xr-x 1 root root 109904 Oct 18  2011 stunnel4

The syntax of the stunnel.conf for stunnel3 is not compatible with the one for stunnel4.

Hence the error. Try removing stunnel3.

Solution 2:

Found my problem... It's not really documented (at least on my Ubuntu system). If I run the command

> stunnel4 config.conf

Then everything works, and all output shows up in the debug log file (if configured in the config file).