Solution to problem: The server responded: 550 5.1.0 sender rejected AUP#O-1030 Outgoing mail server (SMTP) when using an alias email address. Been using an alias for years until Spectrum took over from Time Warner.
Not quite sure what the trouble is. You are still attempting to use an alias for outgoing mail?
For the servers to send mail at this time you do need to authenticate with your proper email address.
If I am misunderstanding the situation please provide a bit more detail about the situation we would be happy to try and help.
Spectrum-Social Media Customer Care
Lead Moderator-Community Forums