Hi, before i was messed up setup my server so i need to reinstall the whole server. my question is simple. here's my setting for setup the mail server. all done, just the hostname. my question is:
what i need to fill in the hostname section. is that my hostname that will be my smtp server like smtp.example.com (sending email, receive email, etc), or my server hostname already exist pointing to my server as server hostname like server.example.com.