Emails are bouncing back, please help!

[healthsupport]

Hi, I haven't had any issues with Shopify emails until today (28 Oct 2020).

I can't communicate with my customers via Shopify email, the email bounces back .....

This is the mail system at host smtp.shopify.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 the postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

   558 5.7.1 5F725E5B0892039E Message content rejected due to suspected spam.
   IB703 (in reply to end of DATA command)
Reporting-MTA: dns; smtp.shopify.com
X-Postfix-Queue-ID: 774EE84CAC
X-Postfix-Sender: rfc822;
Arrival-Date: Thu, 29 Oct 2020 05:47:11 +0000 (UTC)

Final-Recipient: rfc822;
Original-Recipient: rfc822;
Action: failed
Status: 5.7.1
Remote-MTA: dns;
Diagnostic-Code: smtp; 558 5.7.1 5F725E5B0892039E Message content rejected due
   to suspected spam. IB703

Does anyone in IT know how to fix this? I don't understand coding.

Thanks in advance:-)

[Jules77]

Hello,

I am having the same trouble with emails.

The response from the remote server was:

554 5.7.1 <julie@juliedavisveach.com>: Recipient address rejected: user julie@juliedavisveach.com does not exist

Address not found

Your message wasn't delivered to julie@juliedavisveach.combecause the address couldn't be found, or is unable to receive mail.

Did you receive any guidance or have you resolved your problem?