send email

[ipwsite]

Hello,

We have installed VestaCP on our VPS.
And configured all necessarily steps.

However, unable to send email via round cube.

"An error occurred.Close
SMTP Error (451): Failed to add recipient "[email protected]" (Temporary local problem - please try later)."

Please check the attached file.
Any advise please?

[alec]

The error comes from the SMTP server. This is not Roundcube issue.