i am running linux ubuntu mail server, over the weekend emails stop coming in or going out. i dig my server from the server itself and i am get this results
perfectpol@mycompany$ dig mycompany.com mx
;; global options: printcmd
;; connection timeout; no server could be reached
then on a window workstation the results of nslookup is
can't find mx: Non-existent domain
contact my ISP and said the problem lays with local, since my server does host the emails. (by locally mean host them at my company server)
I suppect that mx files have been corrupted or delete. How then should i resolve this, firstly I am new to the company and not all that good in linux. All the server is in command line. I tried to view the /etc/resolv.conf and it was blank. HELP.