second email adress don't send using gmail


a few weeks ago i started a website and with this i got new email adressses but i'm used to gmail and i have an gmail account so i tried to use this new mail adress on my gmail and for now i can only receive emails and not send
following this reply every time

Delivery to the following recipient failed permanently:

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

The error that the other server returned was:
554 5.7.1 <>: Relay access denied


EQ Forum Admin
Staff member
Hi Jesse,

It appears that your webmail server doesn't understand it needs to accept email for your new domain name.

Are you the system administrator for ?

It's also possible that the webmail server is configured to reject email from and/or Gmail's IP addresses.