I am trying to send an email through the default contact form but an email comes to my email saying that:
he email account that you tried to reach does not exist
This is the mail system at host mail2.runhosting.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<noreply@smartaddons.com>: host aspmx.l.google.com[173.194.65.27] said:
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
support.google.com/mail/bin/answer.py?answer=6596
y48si23952760eew.226 - gsmtp (in reply to RCPT TO command)

Dear Barbara Tembriou,

Please check your ticket again. Because you only buy copyright package, but haven't yet buy our SJ eSport template. Please buy our template.

Thanks