535 Authentication Failed received from smtppro.zoho.com with PrestaShop

535 Authentication Failed received from smtppro.zoho.com with PrestaShop

I am using shared hosting via namecheap.com and am hosting a PrestaShop installation.

I'm trying to set up zoho smtp in the email config.

I am entering the correct email and app specific password but am getting the error (when sending a test email):

  1. Error: Please check your configuration

    Failed to authenticate on SMTP server with username "info@q*****s.co.nz" using 2 possible authenticators. Authenticator LOGIN returned Expected response code 235 but got code "535", with message "535 Authentication Failed ". Authenticator PLAIN returned Expected response code 235 but got code "535", with message "535 Authentication Failed ".

What is interesting is that the same credentials work when I use them in my local laptops Apple Mac app. Also, if I use a  Gmail smtp server using my personal account within PrestaShop I can successfully send an email.


I am wondering if there are some security restrictions in place e.g. require to check IMAP first? that PrestaShop is not meeting.

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