This certainly seems like an ubuntu 18.04 bug. 3 machines here all affected. dig imap.comcast.net resolves to imap.ge.xfinity.com. Ping, telnet, wget are all unable to resolve imap.comcast.net.
This certainly seems like an ubuntu 18.04 bug. 3 machines here all affected. dig imap.comcast.net resolves to imap.ge. xfinity. com. Ping, telnet, wget are all unable to resolve imap.comcast.net.