I’m currently experiencing the most bizarre issue with my mail MIAB server. I can’t connect to it through SSH, SSH refuses the connection on port 22.
I also can’t connect the the admin or webmail pages via any web browser. I am hosting on Digital Ocean and the only way I can currently connect is via their web browser based console window, which i’m guessing must be some sort of web based KVM client to the QEMU VPS. I have 4 virtual servers hosted in the SIngapore datacenter on Digital Ocean and the others are accessible as normal. I can connect to them with SSH and to the web pages hosted on them.
I have tried disabling the UFW firewall temporarily to make sure it wasn’t a firewall issue, that didn’t solve the issue. I have checked my DNS records with my DNS provider, Crazy Domains and they all look normal. If anyone has any ideas please help. It has been down for 2 days now. I have rebooted many times. I’m pretty sure the servers are all running like nginx, sshd etc. But i’m not sure which commands I can use to check them.
See this document for a full analysis of the server from centralops.net