I've recently purchased a domain name and have set up a forward to my gmail account. I can receive emails perfectly fine. I have set up SMTP settings on SMPT2GO and have the SPF and DKIM both verified. Upon testing my email (sending from my domain email) I have an error at bottom of my gmail account "550 that smtp username's account is not allowed to send" does this have anything to do with Go daddy taking time to update the DNS settings I changed or is that an issue on SMPT2GO.
Help would be much appreciated, I am completely new to this.