"Set a username"? Can I set a username to use with Threads? If I create an account just for use with Threads then how can I set it up so that all emails are sent from that account?
Overall I reckoned that it's just a hostname issue on the entire server.
At present the vast majority of emails are not reaching my customers and the reason is that the hostname itself doesn't exist (isn't even traceable via traceroute). Most popular isp's are treating this as spam because the hostname seems like a voodoo one.
Is the hostname itself the problem here... or could it be the fact that I haven't set up an email account dedicated to my Threads board?