@gml said in SSL error after upgrading to 5.6.0 on ubuntu 16: That seemed to solve it, even if a server reboot did not solve it. I also got a mail, that this was also visible from other mail-servers (not just from my mail client), as I use DANE for certificate pinning. Thx girish! I had the same issue. And the same fix. A reboot didn't work, a service restart did the trick. Thanks!

I am not an expert on AWS, but aren't AWS instances only CPU+RAM ? I thought the disk does not resize. This is for EC2 instances though. Are you using lightsail by any chance?