i lost my emails

Hi,

i m new in zoho, i m tryng to set email server but i think i made something wrong....

i can t recive email anymore, atlist in the old server, and i m losing all my leads.... please help me i m completly lost!

it s seems email i send are running well but email no way to recive any email

here the message i recive back once i try to send email to my account:

Delivery to the following recipient failed permanently:

info@alternativeteqk.com

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain alternativeteqk.com by aspmx.l.google.com . [2607:f8b0:400e:c04::1a].

The error that the other server returned was:
550-5.1.1 The email account that you tried to reach does not exist. Please try
550-5.1.1 double-checking the recipient's email address for typos or
550-5.1.1 unnecessary spaces. Learn more at
550 5.1.1 http://support.google.com/mail/bin/answer.py?answer=6596 hd2si20762376pbb.209 - gsmtp

thanks for your attention
gabriele