We bought an domain name & domain hosting. We created an catch-all mailbox and we have a Mail Server which use Mail Offline ( POP mail from a mailbox of external Mail Server and distribute mails ).
But we had the problem with the this domain hosting or our ISP. Sometimes, the catch-all mailbox couldn’t send mail so all internal mail also couldn’t send mail too ( we must config to send mail via ISP’s SMTP Server).
Now, we want use Mail Online but don’t know exactly which steps should I do.
For example, the first step : buy an domain name, the second step : ……