Signature-WP not activating

QuestionsCategory: Signature WP ThemeSignature-WP not activating
Liebgroup asked 8 years ago

I was working with Aminul Islam to resolve an issue with the installation of Signature-WP. He asked for my server credentials but when I tried to send them I got an error where the mail delivery failed.
Delivery to the following recipient failed permanently:

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain by [].

The error that the other server returned was:
550 No Such User Here”
Please advise.
Thank you,
Harry Lieb