s3fs complains about SSH key or SSL cert - how to fix?

I downloaded and installed [s3fs 1.73](https://code.google.com/p/s3fs/wiki/FuseOverAmazon) on my Debian Wheezy system. The specific steps I took were, all as root: apt-get -u install build-essential libfuse-dev fuse-utils libcurl4-openssl-dev libxml2-dev mime-support ./configure --prefix=/usr/local make make install The installation went well and I proceeded to create a file /usr/local/etc/passwd-s3fs with my credentials copied from past notes (I'm pretty sure those are correct). That file is mode 0600 owner 0:0. Piecing together from the example on the web page and the man page, I then try a simple mount as a proof of concept to make sure everything works: $ sudo -i # s3fs mybucketname /mnt -o url=https://s3.amazonaws.com -o passwd_file=/usr/local/etc/passwd-s3fs In short: it doesn't. The mount point exists with reasonable permissions, and I get no error output from s3fs. However, nothing gets mounted on /mnt, mount has no idea about anything of the sort, and if I try umount it says about the directory "not mounted". The system logs say s3fs: ###curlCode: 51 msg: SSL peer certificate or SSH remote key was not OK, but **how do I find out which SSL certificate it is talking about or in what way was it not OK?** Firefox has no complaints when I connect to that URL but also redirects me to https://aws.amazon.com/s3/ . **How do I get s3fs to actually work?**