Just moved my Magento CE 184.108.40.206 store from an external hosting provider to my own server environment with more capacity.
Set up new SSL certs using Lets Encrypt and everything seems to work fine.
When looking at the Apache error log I found the following error repeated many times by different IPs:
[Fri Sep 16 14:15:23.285147 2016] [ssl:error] [pid 13821] [client xxxxx:3433] AH02261: Re-negotiation handshake failed: Not accepted by client!?
[Fri Sep 16 14:15:28.114482 2016] [ssl:error] [pid 13926] [client yyyyy:31804] AH02261: Re-negotiation handshake failed: Not accepted by client!?
Most people seem to be able to connect to my site and place orders without problems. Is this something I need to worry about and/or can fix?
Most solutions regarding this specific Apache error are centered around client-side authentication certificates, which obviously do not apply to my public Magento site.
When moving, I cleared all cache, tmp, session folders in var, so I don't think this could be related to stale sessions expecting the old hosting environment.